Dissertations / Theses on the topic 'Auditory aids'
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Kressner, Abigail A. "Auditory models for evaluating algorithms." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41171.
Full textMorrison, Robert Bruce. "Frequency responses of hearing aids coupled with FM auditory trainers." PDXScholar, 1989. https://pdxscholar.library.pdx.edu/open_access_etds/3913.
Full textLi, Min. "Wavelet and filterbank modelling of the normal and impaired auditory system." Thesis, University of Ulster, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245801.
Full textMerry, Kathryn Jean. "The use of auditory brainstem responses in determining the maximum outputs of hearing aids." PDXScholar, 1989. https://pdxscholar.library.pdx.edu/open_access_etds/3906.
Full textOlson, Anne D. "AUDITORY TRAINING AT HOME FOR ADULT HEARING AID USERS." UKnowledge, 2010. http://uknowledge.uky.edu/gradschool_diss/11.
Full textDickinson, Ann-Marie. "Non-linear frequency compression : audiometric predictors of benefit and the role of auditory training." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/nonlinear-frequency-compression-audiometric-predictors-of-benefit-and-the-role-of-auditory-training(de2f3330-2a7f-41c8-a835-c35e5c30c4c7).html.
Full textIreland, Katie Helen. "Can the auditory late response indicate audibility of speech sounds from hearing aids with different digital processing strategies." Thesis, University of Southampton, 2014. https://eprints.soton.ac.uk/385314/.
Full textOlsen, Henrik L. "Supra-threshold hearing loss and wide dynamic range compression /." Stockholm, 2004. http://diss.kib.ki.se/2004/91-7349-921-8.
Full textÅbom, Karl. "Comparison of effectiveness in using 3D-audio and visual aids in identifying objects in a three-dimensional environment." Thesis, Blekinge Tekniska Högskola, Institutionen för programvaruteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-2068.
Full text3D-ljud och visuella hjälpmedel är vanliga i moderna datorspel. I denna uppsats detaljeras en studie kring effektivitet vid använding av 3D-ljud och visuella hjälpmedel i tre-dimensionella miljöer. Studien använder sig av en experimentiell design där testspelare får sitta i ett datorspel-liknande upplägg och använda sig av visuella och auditoriska hjälpmedel för att identifiera objekt i dessa miljöer. Studien bekräftar att det finns en signifikant skillnad i effektivitet mellan olika visuella och auditoriska hjälpmedel i tre-dimensionella miljöer.
Sporck, Karen Kieley. "Effect of real-ear verification on hearing aid benefit /." Full-text of dissertation on the Internet (7.38 MB), 2010. http://www.lib.jmu.edu/general/etd/2010/doctorate/sporcksk/sporcksk_doctorate_04-19-2010_01.pdf.
Full textJuan, Kleber Ramos de. "Avaliação audiológica, eletroacústica e eletrofisiológica da audição em adultos com HIV/AIDS." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/5/5162/tde-02062009-092606/.
Full textINTRODUCTION: The Acquired Immunodeficiency Syndrome is caused by the human immunodeficiency virus, a specific retrovirus that affects the immunological system allowing the emergence of several opportunistic infections, and that may also affect the central auditory nervous system. AIM: To assess the peripheral and central auditory pathways of the auditory system of individuals with HIV/AIDS. METHOD: 25 individuals with HIV/AIDS and 25 individuals from a control group were evaluated by conventional audiological assessment, high-frequency audiometry, transient otoacoustic emissions, suppression of otoacoustic emissions, brainstem auditory evoked potential, middle latency auditory evoked potential, and Cognitive Potential (P300). RESULTS: The study group presented abnormal results in all evaluations while the control group presented abnormal results in high-frequency audiometry, otoacoustic emission suppression, middle latency auditory evoked potential and P300. The comparison of normal and abnormal results between the groups showed statistically significant difference in conventional pure tone audiometry, high-frequency audiometry, tympanometry, acoustic reflexes, otoacoustic emissions, otoacoustic emissions suppression, and brainstem auditory evoked potential; it was also observed a tendency to statistically significant difference in P300. Concerning the types of alterations, the study group presented higher incidence of sensorineural hearing loss in the conventional audiological assessment; alterations suggestive of concomitant middle ear and brainstem disorders in the brainstem auditory evoked potential; concomitant electrode effect and ear effect in the middle latency auditory evoked potential; and increased latency in P300. In the quantitative analysis it was verified that in the comparison of results between the groups there were statistically significant differences for all thresholds obtained in the conventional pure tone audiometry as well as in the high-frequency audiometry; in the brainstem auditory evoked potential for the latency of waves I, III, V, and interpeaks I-V and III-V; in the middle latency for the latency of wave Pa in modalities C4-A1 and C4- A2; and in P300 latency. CONCLUSION: Individuals with HIV/AIDS present alteration in conventional audiological assessment, high-frequency audiometry, otoacoustic emission, otoacoustic emission suppression, and in auditory evoked potentials suggesting abnormalities of both, the peripheral and the central auditory pathways.
Pretorius, Celesté. "The response of the central auditory nervous system to sound in normal hearing adults with and without HIV/AIDS : an fMRI study." Thesis, University of Pretoria, 2017. http://hdl.handle.net/2263/65597.
Full textThesis (PhD)--University of Pretoria, 2017.
Speech-Language Pathology and Audiology
PhD
Unrestricted
Kirby, Benjamin James. "The impact of frequency compression on cortical evoked potentials and perception." Diss., University of Iowa, 2014. https://ir.uiowa.edu/etd/4663.
Full textKäthner, Ivo R. J. [Verfasser], Andrea [Gutachter] Kübler, and Stefan [Gutachter] Debener. "Auditory and visual brain-computer interfaces as communication aids for persons with severe paralysis / Ivo R. J. Käthner. Gutachter: Andrea Kübler ; Stefan Debener." Würzburg : Universität Würzburg, 2016. http://d-nb.info/1112041265/34.
Full textLau, Suk-han. "The effect of type and level of noise on long-term average speech spectrum (LTASS) /." Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B17896253.
Full textOlson, Marcia Ann. "Speech Recognition with Linear and Non-linear Amplification in the Presence of Industrial Noise." PDXScholar, 1996. https://pdxscholar.library.pdx.edu/open_access_etds/5167.
Full textAllard, Bradley James. "The Use of the California Consonant Test and the Northwestern University Auditory Test no. 6 in Hearing Aid Evaluations for Individuals with Precipitous Losses Above 1 kHz." PDXScholar, 1990. https://pdxscholar.library.pdx.edu/open_access_etds/3953.
Full textSpirakis, Gregory J. "Long term stability of self reported hearing aid benefit in adults." Scholar Commons, 2002. http://scholarcommons.usf.edu/etd/2950.
Full textSilva, Eleonora Csipai da. "Características audiológicas pré e pós adaptação de aparelhos auditivos em pacientes com zumbido." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/5/5170/tde-14082018-124857/.
Full textIntroduction: Tinnitus is a symptom of damage of the auditory pathways with varied etiology. Many patients with hearing loss have tinnitus and one of its treatments is the use of hearing aids. Hearing aids amplify external sounds and patients are able to better understand the sounds of the environment, reducing the perception of the tinnitus and improving sound input through enriched acoustics. However, according to literature, some patients do not observe discomfort and tinnitus perception decrease using hearing aids. The study of peripheral hearing in these patients could provide information on factors that make it difficult to reduce tinnitus perception with the use of hearing aids. Objective: To evaluate audiological characteristics of patients with tinnitus and hearing loss, and verify if there are differences between the group that obtained reduction in tinnitus perception with the use of hearing aids and the group that did not obtain the same benefit. Methods: 29 subjects, divided into two groups: Group I (GI) composed of 20 subjects who observed improvement in tinnitus perception after two months of hearing aids use and Group II (GII) with nine subjects who did not observe improvement in tinnitus perception, were evaluated. The Visual Analogue Scale (VAS) score determined the division of the groups. The questionnaires Hearing Handicap Inventory Elderly Screening (HHIE-S) and Tinnitus Handicap Inventory (THI), audiological evaluation (pure tone and bone conduction audiometry, speech recognition index, short increment sensitivity index, otoacoustic emissions), temporal auditory processing tests (Gaps-in-Noise-GIN, Random Interval Detection Test-RGDT, frequency and duration tests (PPS and DPT) and psychoacoustic measures of tinnitus (pitch, loudness and MML) before the fitting of hearing aids and after two months of use were conducted. Subjects were aged between 28 and 68 (mean age 55 years), both sexes, and used same brand hearing aids, with the appropriate fitting for each subject. Results: There was no significant difference between the groups in the audiological tests. Temporal auditory tests accuracy percentage of Group I was higher than Group II, with a tendency to statistical significance in the PPS. Statistical difference was observed in the THI, HHIE-S for GI and GII after the hearing aids use, reducing the score. Regarding psychoacoustic measures, there was significant statistical difference between initial and final loudness and MML in GI, and intergroup difference (GI and GII) in the final MML and loudness. Conclusion: The evaluated audiologic characteristics were not sufficient to indicate if the patient with hearing loss would benefit from a decrease in tinnitus perception after two months of hearing aids use. Individuals with poor PPS performance tend not to reduce tinnitus perception with hearing aids use. The present study indicates the need to investigate other characteristics that may be associated with the difficulty in reducing tinnitus perception with hearing aids use
Moradi, Shahram. "Time is of the essence in speech perception! : Get it fast, or think about it." Doctoral thesis, Linköpings universitet, Handikappvetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-111723.
Full textI denna avhandling undersöktes hur mycket bakgrundsbuller inverkar på isolationspunkten (IP, den tidigaste tidpunkt när ett talat stimulus kan identifieras korrekt) och exakthet i identifikation av olika typer av talade stimuli (konsonanter, ord, och ord i final position i högt predicerbara [HP] respektive lågt predicerbara [LP] meningar). Dessa talade stimuli presenterades i olika modaliteteter (auditivt, visuellt, och audiovisuellt) för unga normalhörande deltagare (Artikel 1, 2 och 5). Dessutom jämfördes under vilka betingelser explicita kognitiva resurser krävdes för identifikation av olika typer av talade stimuli (Artikel 1 och 2). Vidare jämfördes äldre hörapparatsanvändare (EHA) och äldre normalhörande (ENH) personer med avseende på IP, exakthet i identifikation, och under vilka betingelser explicita kognitiva resurser krävdes för auditiv identifikation i tystnad (d.v.s. utan bakgrundsbuller) (Artikel 3). Resultaten visade att bakgrundsbuller gav senare IP och sänkte exaktheten för identifikation av olika typer av talade stimuli och i båda modaliteterna för presentation. Explicita kognitiva resurser krävdes vid identifikation av talade stimuli vid rent auditiv presentation med bakgrundsbuller, och när ingen semantisk förhandsinformation presenterades. Dessutom resulterade audiovisuell presentation i tidigare IP och mer exakt identifikation av talade stimuli, jämfört med rent auditiv presentation. Ett ytterligare resultat var att förexponering av audiovisuella talade stimuli resulterade i bättre identifikation av tal i bakgrundsbrus, jämfört med förexponering av enbart auditiva talade stimuli (Artikel 2 och 4). Vid jämförelse av EHA-användare och ENH-personer, hade EHA-användare senare IP i identifikation av konsonanter, ord, och ord i final position i LP-meningar. Dessutom hade EHA-användare mindre exakt identifikation av konsonanter och ord. Endast identifikation av konsonanter och ord krävde explicita kognitiva resurser hos EHA-användare. Teoretiska prediktioner och kliniska implikationer diskuterades.
Rodrigues, Amanda Giorgetto. "Caracterização do potencial evocado auditivo cortical P1-N1-P2 em crianças com estimulação bimodal." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/25/25143/tde-28062016-084634/.
Full textIntroduction: The cochlear implant (CI) is already accepted in the area, as an intervention (re)habilitation in severe and profound hearing loss in different age groups. However, it is observed in the unilateral CI users have complaints such as sound localization and understanding speech in noise. Recent studies with Cortical Auditory Evoked Potential (CAEP) demonstrated the fact that the CI cannot favors the ipsilateral development of the auditory pathway as expected. Therefore, unilateral CI users have an abnormal pattern of sensory stimulation. In this sense, the patient is advised and encouraged as to the fitting of hearing aids (HA) in no-implanted ear, especially in the presence of residual acoustic hearing in order to provide the benefits of binaural hearing. This condition is referred to bimodal hearing, when combining electric stimulation from the CI with acoustic stimulation from the contralateral ear provides to HA. Not enough data in the literature has focused on the child population to clarify or demonstrate the development of the auditory cortex in the bimodal hearing. Objective: To characterize the CAEP complex P1-N1-P2 users of bimodal stimulation and check for correlation with performance on tests of speech perception. Methods: A cross-sectional observational study, with the completion of the CAEP in six children using the Bimodal stimulation, the CAEP recording will be based in the methodology proposed by VENTURA (2008) using the system Smart EP USB Jr Intelligent Hearing Systems. The speech sound / of /, presented in free field, will be used. The potential will be recorded in three situations: monaural hearing (only CI); Bimodal hearing (IC and HA) and monoaural hearing (only HA). The examination will be held in three situations: monaural hearing (only IC); Bimodal hearing (IC and hearing aids) and hearing monaural (only the hearing aid). Data analysis of the cortical potential was performed after the marking of the presence or absence of the components of the N1-P1-P2 complex by two judges experienced in evoked potentials. It was verified that the record of the ECCP is a viable procedure for the assessment of children with bimodal stimulation and can assist in bilateral IC nomination process or the maintenance of bimodal stimulation.
Bond, Phillip K. "Comparison of speech intelligibility over the telephone using a hearing aid microphone and telecoil /." Full-text of dissertation on the Internet (383.60 KB), 2010. http://www.lib.jmu.edu/general/etd/2010/doctorate/bondpk/bondpk_doctorate_04-20-2010.pdf.
Full textSantos, Marina De Marchi dos. "Perda auditiva unilateral: benefício da amplificação na ordenação e resolução temporal e localização sonora." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/25/25143/tde-28062016-074933/.
Full textThe Unilateral hearing loss (UHL) is characterized by decreased hearing in one ear. In individuals with this type of hearing loss the hearing abilities of sound localization, and temporal processing, ordering and temporal resolution, are affected. The objective of this study was to assess the hearing abilities of temporal ordering, temporal resolution and sound localization before and after the fitting of a hearing aid (HA). They evaluated 22 subjects, aged 18 to 60 years, diagnosed with sensorineural or mixed UHL, from mild to severe degrees. The study was divided into two stages: the pre and post-adaptation of HA. In both phases, subjects were submitted to an interview, application of Questionnarie for Desabilities Associated with Impaired Auditory Localization, auditory processing screening protocol (APSP) and Random Gap Detection Test (RGDT). This study found no statistically significant difference in the evaluation of APSP except in the memory test for non-verbal sounds in sequence, in RGDT and Questionnarie for Desabilities Associated with Impaired Auditory Localization. The conclusion was that with the effective use of hearing aids, individuals with UHL showed improvement in the auditory abilities of sound localization, ordering and temporal resolution.
Stadler, Svante. "Probabilistic Modelling of Hearing : Speech Recognition and Optimal Audiometry." Licentiate thesis, Stockholm : Skolan för elektro- och systemteknik, Kungliga Tekniska högskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-10386.
Full textLeusie, Séverine. "Privation sensorielle auditive et réhabilitation chez le sujet âgé : conséquences sur le fonctionnement cognitif." Thesis, Lyon 1, 2015. http://www.theses.fr/2015LYO10043/document.
Full textPresbycusis is a disease that occurs in more than 12 million French people, but which is still not well known. If it is not treated early, it can lead to serious complications such as communication disorders, depression and cognitive impairment. The current situation is that very few presbycusic patients are treated, and when they are, the result seems insufficient. The purpose of this thesis is to propose using current data, solutions tailored to the needs of these patients, from screening to rehabilitation. Three studies were conducted: the "AcoumAudio" Study, available in three components showed that the vocal acoumetry was a good hearing test to screen elderly people, to evaluate the degree of hearing disorders and to measure functional auditory gain after rehabilitation; Study 1 entitled "Auditory deprivation and cognitive functioning in the elderly" showed that wearing hearing aids could preserve from cognitive deterioration; and Study 2 entitled "Feasibility of a Conjoint Rehabilitation involving audiology and speech therapy for presbycusis (FRéCAOP)" showed that it was possible to offer a more complete and efficient management of presbycusis, in the hearing circuit of GRAPsanté, necessarily including a caregiver
劉淑 and Suk-han Lau. "The effect of type and level of noise on long-term average speech spectrum (LTASS)." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31251031.
Full textBosso, Janaina Regina. "Ajustes das características eletroacústicas do aparelho de amplificação sonora individual com base em limiares auditivos tonais e resposta auditiva de estado estável." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/47/47135/tde-15122009-123157/.
Full textThe impossibility for obtaining behavioral auditory data in children with hearing loss brings the necessity of applying objective tests as auditory steady state responses (ASSR) in order to evaluate the auditory thresholds. The objective of this study was to verify the differences found on the selection of the eletroacoustic characteristics of the hearing aid (AASI) based on the auditory thresholds, obtained by the auditory steady state responses (ASSR) in comparison with the same procedure realized, based on audiometric thresholds: A total of 28 people with sensorineural hearing loss were studied: group A comprised 10 adults (average age 46,3 years) and group B comprised 18 children (average age 10,38 years). The prescriptive method applied was Desired Sensation Level (DSL) i/o version 4.1. The individualized measurement of RECD was applied as acoustic transformer. Three different programs were generated considering the audiometric thresholds on the frequencies from 0,25 to 6kHz (complete tonal program- ProTC), the audiometric thresholds just on the frequencies 0,5, 1, 2 and 4 kHz (tonal program- ProT) and the auditory thresholds obtained by the ASSR on the frequencies 0,5, 1, 2 and 4 kHz (electrophysiological program ProE). The verification of the amplification was realized by a coupler of 2cc. The evaluation of speech recognition in noise (group A and B) and the judgment of sound quality (group A) was performed. The results showed that the Real Ear Aided Response prescribed (REAR P) were higher for the program based on the auditory thresholds estimated by the ASSR. The differences were significant, for all the levels of intensity tested, for the frequencies 0,5, 1, 2 and 2 kHz in group A and in all the frequencies in group B. The difference between REAR P and the REAR measured in coupler of 2cc (REAR M) was lower than 1,4dB for all the frequencies and intensities studied, for groups A and B. Differences were not found between the REAR M obtained on the ProTC and ProT. The results for REAR M obtained on the ProE were higher than the ones obtained on the programs ProTC and ProT. Significant differences were not found in the evaluation for the speech perception in adults. For children, significant differences were found for S/N on the ProE when compared to the program ProTC and ProT. On the evaluation of the sound quality, the results showed worse judgment of the dimensions evaluated, on the ProE. However, a significant difference was found for auditory comfort dimension. The outcomes of the present study shows that the auditory threshold obtained by the ASSR can be employed for the determination of the electroacoustic characteristics of the hearing aids in adults and children.
Bakhos, David. "Etude électrophysiologique des réponses auditives corticales chez l'enfant avec une réhabilitation auditive." Thesis, Tours, 2012. http://www.theses.fr/2012TOUR3307.
Full textCongenitally deaf children cannot acquire spoken language. Language development following auditory rehabilitation varies widely from child to child; this variability could be explained by cortical reorganisation following congenital deafness. Electrophysiological techniques make it possible to investigate cortical auditory processing. Our first study identified a relationship between auditory temporal responses (N1c wave) and language performance in children fitted with hearing aids for moderate congenital deafness. Our second study investigated cortical voice processing in children with a cochlear implant (CI) and with good language performance. Minimisation of the CI artifact was a preliminary step to analyse cortical auditory evoked potentials. A specific response to voice was found in children with CI, broader and more frontally distributed than this recorded in normal hearing children. The identification of such markers shoult it make possible to identify prognostic factors and to better indentify children in need of early care management
Van, der Westhuizen Yolande. "Audiological and otological symtoms in adults with HIV." Diss., University of Pretoria, 2011. http://hdl.handle.net/2263/30369.
Full textDissertation (MCommunication Pathology)--University of Pretoria, 2011.
Speech-Language Pathology and Audiology
Unrestricted
Souza, Gabriela Valiengo de. "Potenciais evocados auditivos de longa latência em adultos pré e pós adaptação do AASI." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/5/5170/tde-27102017-085811/.
Full textIntroduction: Auditory plasticity refers to changes that occur in the sensory system responsible for the transmission of acoustic information. The plasticity of the central auditory nervous system is related to the capacity of adaptation through the reintroduction of stimuli of sound amplification devices or cochlear implants. These changes are observed from the performance of patients with the use of the sound amplification apparatus, and can be verified by long-latency auditory evoked potentials. Purpose: To characterize long latency auditory evoked potentials (LLAEP) in adults with sensorineural hearing loss, verifying the effects of auditory stimulation by comparing these before and after adaptation potentials of the Individual Sound Amplification (AASI). Methodology: Fifteen adult and elderly individuals of both genders, aged 55 to 85 years, with mild to moderate sensorineural hearing loss with symmetry between the ears, without prior experience with any type of sound amplification device. The subjects were referred by hearing aid companies WIDEX, Audibel and Espaço Reouvir, in the case of new hearing aids users. The LLAEP were performed in the conditions with and without AASI, at 60 and 75 dBnNA in sound field, in two moments: first evaluation performed up to one week after AASI adaptation and the second evaluation performed after 6 months of AASI adaptation. Results: In the comparison of the first evaluation with the second evaluation, in the condition without AASI at 60 dBnNA, a statistically significant difference was observed in the latency of the P1 component (p-value = 0.034). In the condition without AASI at 75 dBnNA, a statistically significant difference was observed for the latency of the P300 component (p-value 0.031) and for the P2N2 amplitude (p-value 0.024), with latency decrease and amplitude increase in the second evaluation. In the comparison of the first evaluation with the second evaluation, in the condition with AASI at 75 dBnNA, there was a statistically significant difference in the latency of the N2 component (p-value 0.009) and in the P2N2 amplitude (p-value 0.024) , With amplitude increase in the second evaluation. There was also a significant difference in P1N1 amplitude (p-value 0.024) in the condition with AASI at 60 dBnNA. Conclusion: The LLAEP was an important procedure to be used in clinical practice, aiming to monitor the neural plasticity of the Central Auditory Nervous System in front of auditory stimulation (hearing aids use) in adults and elderly patients with mild to moderate sensorineural hearing loss of amplification and the importance of neural plasticity of the Central Auditory Nervous System
Fonseca, Angélica Biazus Mendonça da. "Avaliação das habilidades auditivas e da percepção de fala em idosos usuários de Aparelho de Amplificação Sonora Individual: esudo piloto." Pontifícia Universidade Católica de São Paulo, 2014. https://tede2.pucsp.br/handle/handle/11985.
Full textprocessing, associated with the decline of working memory and attention. The comprehension of speech is a highly specialized activity and involves the perception and cognition. The objective of this study was to investigate whether the assessment of auditory skills and speech perception in the elderly, new users of Individual sound amplification device, assists in the process of selection and adaptation of AASI. Methods: we selected 15 individuals with sensorineural hearing loss from mild to moderate degree, new users of bilateral hearing aids, aged between 60 and 75 years. The subjects were assessed by means of Duration Pattern Sequence Test (DPST), Dichotic Digits Test (DDT), Differential Limen of Intensity (DLI), Index of Sentence Recognition (ISR) in quiet and in noise, Sentence Recognition Threshold (SRT) in quiet and in noise and by self-evaluation questionnaire auditory handicap for senior citizens (HHIE-S) in two instances: without hearing aid (first evaluation), and after 3 months (2nd evaluation). Results: tests, DLI only in LE, SRT in noise , SRT in quiet and ISR in quiet showed that there were no statistically significant difference between the two evaluations. In the remaining tests there is difference statistically significant between the assessments. Conclusion: The proposed tests may be part of the process of adaptation of the HEARING AID, because they contribute to the extent of satisfaction and performance, allowing the audiologist forward to hearing/cognitive rehabilitation when necessary
Com a diminuição da audição periférica, ocorre uma piora no processamento da informação, associada ao declínio da memória de trabalho e atenção. A compreensão da fala é uma atividade altamente especializada e envolve basicamente a percepção e a cognição. O objetivo deste estudo foi investigar se a avaliação das habilidades auditivas e de percepção de fala em idosos, novos usuários de Aparelho de Amplificação Sonora Individual (AASI), auxilia no processo de seleção e de adaptação do AASI. Métodos: Foram selecionados 15 indivíduos portadores de perda auditiva neurossensorial de grau leve a moderado, novos usuários de próteses auditivas bilaterais, com idades entre 60 e 75 anos. Os sujeitos foram avaliados por meio dos testes de Duration Pattern Sequence (DPS), Teste Dicótico de Dígitos (TDD), Limiar Diferencial de Intensidade (LDI), Pesquisa do Índice de reconhecimento de sentenças (IRS) no silêncio e no ruído, Pesquisa do Limiar de reconhecimento para sentenças (LRS) no silencio e no ruído e pelo questionário de auto avaliação do handicap auditivo para idosos (HHIE-S) em dois momentos: sem próteses (1ª avaliação), e após 3 meses (2ª avaliação). Resultados: Somente nos testes de LDI na OE, LRS no silêncio e no ruído, e IRS no silêncio não mostraram diferenças estatisticamente significantes entre as duas avaliações. Nos demais testes houve diferença estatisticamente significante entre as avaliações. Conclusão: Os testes propostos poderão fazer parte do processo de adaptação do AASI, pois contribuem na medida de satisfação e desempenho, permitindo ao fonoaudiólogo encaminhar para a reabilitação auditiva/cognitiva, quando for necessário
Freitas, Thaysa Vidal Dias de. "Potencial Evocado Auditivo de Longa Latência em crianças com deficiência auditiva sensorioneural e usuárias de aparelho de amplificação sonora individual." Pontifícia Universidade Católica de São Paulo, 2014. https://tede2.pucsp.br/handle/handle/11978.
Full textCoordenação de Aperfeiçoamento de Pessoal de Nível Superior
To describe the results of long latency auditory evoked potentials, P1-N1-P2 complex, in children with sensorineural hearing impairment and hearing aids users. Method: 10 children with congenital bilateral sensorineural hearing impairment, with symmetrical configuration and moderate to profound degree of hearing loss, were subjects of the present study, age ranging between 2 and 8 years old. The subjects were followed up in a hearing health center in Sao Paulo. Data were collected concerning to the degree of hearing loss, auditory age, age when hearing aids were adapted, approach for speech therapy, and systematic use of hearing aids. The Long Latency Auditory Evoked Potentials (LLAEP) were recorded using insert earphones at 85dBSPL, without hearing aids; the same test was performed in free field at 100dBSPL, with loudspeaker positioned at 90 degrees, aside of the better ear, with subjects using their hearing aids. The equipment used has two recording channels, one to record the LLAEP and the other to record the eyes movements to control the artifact generated. Two recordings were collected to verify the reproducibility of the waves. Results: The latency values of the components P1-N1-P2 in unaided and aided tests were statistically analyzed and described according to the variables. The volunteers with absence of LLEAP in the unaided test had severe and profound hearing loss. When the test was performed with hearing aids through sound field all subjects showed LLEAP. There was significance correlation between auditory age and P1-N1 latency. In the analysis between onset age of hearing aids use, weekly hours of therapy, approach in language therapy, and systematic use of hearing aids, there was no association with the P1-N1-P2 latency. Conclusion: Subjects with moderate degree of hearing loss showed presence of LLAEP in aided and unaided tests; volunteers with severe and profound degree of hearing loss showed absence of LLAEP in unaided tests. All volunteers showed presence of LLAEP in the aided test, independent of the degree of hearing loss. The latency value of P1 was increased, regardless of auditory age
Descrever os resultados dos potenciais evocados auditivos de longa latência, complexo P1-N1-P2, em crianças com deficiência auditiva sensorioneural e usuárias de aparelho de amplificação sonora individual. Método: Participaram da pesquisa 10 crianças com perda auditiva sensorioneural congênita, bilateral, de configuração simétrica, com graus de moderado a profundo, idades entre 2 e 8 anos, e estavam em acompanhamento audiológico num centro de referência em saúde auditiva de São Paulo. Foram coletados dados sobre o grau de perda auditiva, idade auditiva, idade de início do uso do AASI, terapia fonoaudiológica e o uso sistemático do AASI. Os Potenciais Evocados Auditivos de Longa Latência (PEALL) foram registrados utilizando fones de inserção na intensidade de 85dBNPS no teste sem AASI; foi realizado o registro do PEALL em campo livre, por meio de um alto-falante na intensidade de 100dBNPS, no teste com AASI. O equipamento utilizado dispõe de dois canais de registro, sendo que um foi remetido ao registro dos PEALL, e o outro, ao registro do movimento ocular para controle do artefato gerado. Resultados: Os valores de latência dos componentes P1-N1-P2 nos testes sem e com AASI foram analisados estatisticamente e descritos de acordo com as variáveis do estudo. Os voluntários com ausência dos PEALL no teste sem AASI tinham grau de perda auditiva severa e profunda. No teste com AASI, em toda a amostra foram identificados os PEALL. Houve uma correlação sugestiva de significância entre a idade auditiva e o tempo de latência de P1-N1. Na análise entre idade de início do uso do AASI, horas semanais de terapia, abordagem terapêutica e uso sistemático do AASI, não houve associação com a latência de P1-N1. Conclusão: Voluntários com o grau de perda auditiva moderado apresentaram presença dos PEALL nos testes sem e com AASI; os voluntários que tinham o grau de perda auditiva severa e profunda apresentaram ausência dos PEALL nos testes sem AASI. Todos os voluntários tiveram presença dos PEALL independente do grau de perda auditiva, no teste com AASI. O valor de latência de P1 foi aumentado, independente da idade auditiva
Hoshii, Lia Auer. "Estudo do potencial evocado auditivo de longa latência em um grupo de crianças deficientes auditivas usuárias de aparelhos de amplificação sonora individual: estudo de caso." Pontifícia Universidade Católica de São Paulo, 2010. https://tede2.pucsp.br/handle/handle/12285.
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Introduction: Recent scientific studies use Long-Latency Auditory Evoked Potentials in order to measure the developmental status and plasticity limits of central auditory pathways. Goal: To study Long-Latency Auditory Evoked Potentials outcomes in hearing impaired children wearing hearing aids and personal sound amplification devices. Method: Case studies of five subjects, male and female, diagnosed with mild to profound neurosensory hearing loss, ages ranging from seven to 19 years old. The subjects were submitted to Long-Latency Auditory Evoked Potentials and Cognitive Potential (P300). The latency of components P1, N1, N2, P2 and P300 were analyzed. Prior evaluations consisting of inspecting the external acoustic meatus, tympanometry and pure tone audiometry were performed. Four of the subjects performed the Long-Latency Auditory Evoked Potentials only once. One subject performed the test twice, since he was discharged from speech therapy and stopped using the hearing aids for five months. Results: It was possible to measure the components P1, N1, P2, N2 and P300 for all subjects. Subject 1 presented delayed latency for components P1, N1 and P2 on the right ear, and no response for P1 and N1 on the left ear. Subject 2 presented no response for component P1 bilaterally. Subject 3 presented delayed latency for components P2 and N2 on the right ear and no response for P1 on the left ear. Subject 4 presented delayed latency for N2 and P300 on the right ear. Subject 5 presented delayed latency for components N1 and N2 bilaterally, for P2 on the left ear and no response for P1 on the right ear. The second test collected showed a delay in almost all components of the Long Latency Auditory Evoked Potentials, except for N1 and P2 on the right ear. Conclusions: It is possible to perform Long-Latency Auditory Evoked Potentials in hearing impaired children who wear hearing aids and personal sound amplification devices from the age of 8 years. Degree of hearing loss, lack of systematic use of personal sound amplification devices, and long term sound deprivation can affect the results of Long-latency Auditory Evoked Potentials., and consequently the neural plasticity process
Introdução: Estudos recentes na área da audição utilizam o registro dos Potenciais Evocados Auditivos como forma objetiva de mensurar o status do desenvolvimento e os limites da plasticidade das vias auditivas centrais, por meio dos Potenciais Auditivos de Longa Latência. Objetivo: Estudar os resultados dos Potencias Evocados Auditivos de Longa Latência em crianças deficientes auditivas usuárias de aparelho de amplificação sonora individual. Método: Consiste no estudo de caso de cinco sujeitos os quais apresentavam deficiência auditiva neurossensorial de grau leve a profundo, do sexo masculino e feminino, na faixa etária de sete a 19 anos. Os sujeitos deste estudo foram submetidos ao registro do Potencial Evocado Auditivo de Longa Latência e Potencial Cognitivo, denominado P300. Foram analisadas as latências dos componentes P1, N1, N2, P2 e P300. Previamente ao registro dos potencias evocados de longa latência foram realizadas a inspeção do meato acústico externo, timpanometria e audiometria tonal. Resultados: Foi possível registrar os componentes P1, N1, P2, N2 e P300 em todos os sujeitos. Dessa forma, o sujeito 1 apresentou latência aumentada para componentes P1, N1, P2 à direita e P1 e N1 ausentes à esquerda. O sujeito 2 apresentou apenas o componente P1 ausente bilateralmente. O caso 3 apresentou aumento das latências dos componentes P2 e N2 à direita e ausência do P1 à esquerda. No sujeito 4 foi registrado aumento das latências N2 e P300 à direita. E para o sujeito 5 aumento das latências dos componentes N1 e N2 bilateralmente, P2 à esquerda e ausência do P1 à direita. Em seu segundo exame, foi registrado um aumento em quase todos os componente do PEALL, com exceção N1 e P2 à direita. Os resultados deste estudo indicam que a perda auditiva teve relação com os resultados do componente P1 registrado nos sujeitos deste estudo. Parecendo assim, que quanto maior o grau da perda auditiva, maior é a latência deste componente. Já os outros componentes N1, P2, N2, parecem ter relação com a quantidade de estimulação que o sujeito recebe, ou seja, quanto à sistematicidade de estimulação auditiva. Quanto menos o sujeito usou AASI, mais alterado se deu o registro destes potenciais. Conclusões: Concluiu-se que é possível a realização do registro dos Potenciais Evocados Auditivos de Longa Latência em crianças deficientes auditivas usuárias de aparelho de amplificação sonora individual a partir dos oito anos de idade. Fatores como grau da perda auditiva, a não sistematicidade na utilização do aparelho de amplificação sonora individual e um longo tempo de privação auditiva parecem afetar os resultados dos Potencias Evocados Auditivos de Longa Latência, o que nos sugere um efeito na plasticidade das vias auditivas centrais
Azevedo, Milena Manoel de. "INTERFERÊNCIA BINAURAL E ADAPTAÇÃO DE PRÓTESES AUDITIVAS EM PERDAS AUDITIVAS SIMÉTRICAS." Universidade Federal de Santa Maria, 2013. http://repositorio.ufsm.br/handle/1/6568.
Full textObjetivo:Investigar a ocorrência da interferência binaural. Investigar o uso mono ou binaural das próteses auditivas e as queixas de compreensão de fala no silêncio e no ruído. Avaliar o reconhecimento de fala com e sem uso de próteses auditivas mono e binaural e habilidades do processamento auditivo. Correlacionar os resultados obtidos nos diferentes testes. Avaliar o reconhecimento de sentenças no silêncio e no ruído, de indivíduos idosos com perdas auditivas simétricas, usuários de próteses auditivas com adaptação mono e binaural, investigando em qual das duas situações pode ser verificado o melhor desempenho em condições que simulam situações de comunicação do diaadia. Material e método: Foram avaliados 38 sujeitos, sendo 25 homens e 13 mulheres, com idade entre 60 e 89 anos, perda auditiva neurossensorial de grau leve a moderadamente severo, de configuração simétrica, usuários de próteses auditivascom indicação binaural. Foi pesquisado o Índice Percentual de Reconhecimento de Fala (IPRF) em ambas as orelhas (AO) e realizados dois testes: oTeste Dicótico de Dígitos (TDD) atenção dividida e direcionada e o teste Listas de Sentenças em Português (LSP). Pesquisou-se aindaos Limiares de Reconhecimento de Sentenças no Silêncio e no Ruído (LRSS e LRSR) e Índice Percentual de Reconhecimento de Sentenças no Silêncio e no ruído (IPRSS e IPRSR), com adaptação binaural (AO) e monoaural orelha direita (OD) e orelha esquerda (OE). Resultados:Entre os indivíduos avaliados, 31(81,58%) relataram fazer uso binaural das próteses auditivas, 19 (50%) relataram nunca ter dificuldade de compreender a fala no silêncio e 17(44,75%) às vezes. 22 (57,89%) referiram dificuldade para reconhecer a fala no ruído, às vezes e 15 (39,47%) sempre. Os valores médios obtidos para os IPRF foram de 72,95% em AO, 59,26% na OD e 60,53% na OE, respectivamente. As médias obtidas do TDD foram 54,58% em AO, 65,16% na OD e 71,95% OE. Quanto aos dados do IPRSS, foram de 79,63% em AO, 74,79% na OD e 72,40% na OE. A correlação das variáveis IPRF, TDD e IPRSS, o IPRF e o LSP tendem a apresentar resultados semelhantes. Em relação às análises no silêncio e no ruído com adaptação binaural e monoaural, os valores médios obtidos para os IPRSS foram de 80,89% em AO, 76,33% na OD e 71,16% na OE, respectivamente. Já as médias obtidas do IPRSR foram 62,05 % em AO, 60,52% na OD e 60,33%OE. Conclusão:Foi encontrado em um indivíduo indícios da presença de interferência binaural. A grande maioria dos idosos fazia uso binaural das próteses auditivas.Somente um indivíduo não apresentou queixa de compreensão de fala no ruído. O IPRF demonstrou melhor desempenho na condição binaural. O TDD evidenciou pior desempenho na tarefa de integração binaural. Já no LSP não foi encontrada diferença estatisticamente significante entre o desempenho mono e binaural. O teste TDD pode não ser a opção mais adequada para ser utilizado em pacientes idosos com perda auditiva; já o IPRF e o LSP tendem a apresentar resultados semelhantes. O reconhecimento de sentenças dos sujeitos avaliados mostrou melhor desempenho com a adaptação binaural, tanto no silêncio como no ruído. Entretanto, essa diferença não foi estatisticamente significante.
Medina, Vanessa. "Correlatos acústicos e perceptivos da qualidade vocal de indivíduos portadores da Síndrome de Imunodeficiência Adquirida (SIDA)." Pontifícia Universidade Católica de São Paulo, 2013. https://tede2.pucsp.br/handle/handle/13615.
Full textsome authors suggest that patients with acquired immune deficiency syndrome (AIDS) show vocal production disturbances, but there are few reports concerned on voice quality description. Objective: to evaluate the voice quality of subjects with AIDS from a phonetic perspective. Methodology: this study took place at the Institute of Infectology Emílio Ribas and has been properly approved by its ethical committee. 29 subjects were divided into two groups (group 1: research, group 2: reference). Group 1 was composed by 20 subjects with AIDS, 10 male and 10 female, all of them with metabolic alterations (Dyslipidemia) and under antiretroviral therapy. Group 2 was composed of 9 subjects, 5 female and 4 male, all of them with metabolic alterations (Dyslipidemia), without AIDS. The audio samples were recorded and submitted to auditory (Vocal Profile Analysis Scheme for Brazilian Portuguese) and acoustic analysis (ExpressionEvaluator Script running in PRAAT v.10 software). The auditory and acoustic data underwent multivariate statistic analysis (software XLStat). Results: Group 1 (AIDS) revealed predominance of the vocal tract (retracted tongue body, lowered tongue body and pharyngeal constriction), muscular tension (vocal tract hyperfunction) and phonatory settings (creaky voice, harsh voice associated to whisper), differing by gender. From the acoustic point of view, the discriminator power of the acoustic measures was decreased when compared to perceptual descriptions. From the perceptual point of view the period of antiretroviral treatment revealed a relation with voice quality settings. Conclusion: the phonetic approach of voice quality in a group of subjects with AIDS revealed voice quality settings related to pharyngeal constriction and retracted tongue body. From an acoustic perspective, the acoustic measures revealed relevance for the description of the male population with AIDS. The integrated analysis of perceptual and acoustic data revealed correlation between vocal tract, tension and phonatory settings and LTAS long term spectrogram, spectral slope and fundamental frequency (f0) measures. The descriptions of voice quality settings, from the perceptual perspective, were relevant to characterize the voice quality of the studied group, as well as for revealing the association with the duration of antiretroviral therapy
apesar de alguns estudos sugerirem que pacientes com a Síndrome da Imunodeficiência Adquirida (SIDA) apresentam alterações nas estruturas envolvidas na produção vocal, não há relatos de descrições de qualidade vocal neste grupo. Objetivo: avaliar, do ponto de vista fonético, a qualidade vocal de indivíduos portadores da Síndrome da Imunodeficiência Adquirida (AIDS), por meio da descrição de correlatos acústicos e perceptivos. Metodologia: o estudo foi realizado no instituto de infectologia Emílio Ribas, com aprovação do comitê de ética. O grupo estudado constou de 29 indivíduos, sendo divididos em dois grupos (grupo pesquisa e grupo referência). O grupo de pesquisa foi constituído por 20 indivíduos portadores de SIDA, 10 homens e 10 mulheres com presença de alterações metabólicas (dislipidemia) e uso de medicamento antirretroviral. O grupo controle foi composto por nove indivíduos, cinco mulheres e quatro homens que apresentaram alteração metabólica: dislipidemia sem a presença de SIDA. As amostras de áudio foram coletadas e submetidas a análise perceptivo-auditiva (roteiro VPAS - PB) e acústica (script ExpressionEvaluator aplicável ao software Praat v.10). Os dados perceptivo-auditivos e acústicos foram analisados por meio de análise estatística de natureza multivariada (software XLStat). Resultados: o grupo estudado (SIDA) revelou o predomínio de ajustes do trato vocal (corpo de língua recuado, corpo de língua abaixado e constrição faríngea), ajustes de tensão muscular (hiperfunção de trato vocal) e ajustes fonatórios (voz crepitante, escape de ar associado a voz áspera), diferenciados por gêneros. Do ponto de vista acústico, o valor segregatório das medidas acústicas foi inferior às descrições perceptivas. O tempo de medicação revelou relação com as manifestações de qualidade vocal do ponto de vista perceptivo. Conclusão: do ponto de vista fonético, foram destacados na população com SIDA os ajustes de qualidade vocal de constrição faríngea e de corpo de língua recuado. Do ponto de vista acústico, as informações de medidas acústicas revelaram relevância para descrição da população SIDA do gênero masculino. A análise integrada de dados perceptivos e acústicos revelou a maior correlação de ajustes de trato vocal, de tensão e fonatórios a medidas acústicas de LTAS- espectro de longo termo, declínio espectral e frequência fundamental- f0. As descrições de ajustes de qualidade vocal por meio perceptivo foram relevantes para caracterizar a qualidade vocal do grupo estudado, bem como revelaram associação com o tempo de medicação
Coetzer, Tarien. "'n Beskrywing van ouers, onderwyseresse, spraak-taalterapeute en oudioloë se persepsies oor die uitkomstes van 'n ouditief-verbale benadering tot opvoeding by jong kinders met 'n gehoorverlies." Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6530.
Full textENGLISH ABSTRACT: Various approaches to the communication-development of the young child with a hearing impairment exist, of which the auditory-verbal approach is one. This approach is based on the principle that the child with a hearingimpairment develops speech- and language skills by using his/her residual hearing that is appropriately strengthened with the use of a hearing aid and/or cochlear implant. One of the most important requirements for the successful application of this approach is the appropriate transfer of the techniques and strategies that is used in institution-based intervention to the child’s home environment. Parents, teachers, speech-language therapists and audiologists are responsible for facilitating the transfer of intervention methods and acquired skills to the home environment and it is important that all team members are aware of his/her own, as well as each other’s roles, in the application of this approach. The principal aim of the proposed research project was to describe and explain the perceptions of parents/caregivers, teachers, speech-language therapists and audiologists, that are involved in the intervention of the hearing impaired child, regarding the auditory-verbal approach to education. Semi-structured interviews were conducted with nine parents of hearing impaired children younger than the age of four, and with four teachers that are involved in the education of the said children. Lastly, semi-structured interviews were held with four speech-language therapists and two audiologists that are involved in the provision of the intervention to hearing impaired children younger than four years. All the participants were affiliated with a specific centre for children with hearing impairment in the Western Cape province of South Africa. All the participants noted that parents must take part in the decision-making process with regards to the selection of the most suitable communication approach for their child with a hearing loss. Participants also agreed that most parents choose the auditory-verbal approach to communication development of their child because speech as a communication medium, is familiar to them and it is also associated with normality. Parents also indicated that the auditory-verbal approach is the most suitable approach for all children with a hearing loss. Teachers, speech-language therapists and audiologists did not completely agree with the parents as they mentioned some aspects, e.g. the presence of additional disabilities must be taken into account before a decision can be made regarding whether the child with hearing loss could follow the auditory-verbal approach to communication development. All participants displayed a positive attitude towards the auditory-verbal approach and it appears that parents, teachers, speech-language therapists and audiologists have good insight into the principles and outcomes of this approach.
AFRIKAANSE OPSOMMING: Daar bestaan verskeie benaderings tot kommunikasie-ontwikkeling by die jong kind met gehoorverlies waarvan die ouditief-verbale benadering een opsie is. Hierdie benadering is gebaseer op die beginsel dat die kind met gehoorverlies spraak- en taalvaardighede ontwikkel deur gebruik te maak van hulle residuele gehoor wat deur middel van die gebruik van ‘n gehoorapparaat en/of kogleêre inplanting toepaslik versterk word. Een van die belangrikste vereistes vir die suksesvolle toepassing van die benadering is toepaslike oordrag van die tegnieke en strategieë wat in terapie gebruik word, na die kind se tuisomgewing. Ouers, onderwysers, spraak-taalterapeute en oudioloë speel ‘n baie belangrike rol om hierdie oordrag na alledaagse kontekste te fassiliteer en dit is belangrik dat elke spanlid bewus is van sy/haar rol asook die ander lede se rolle in die toepassing van die benadering. Die hoofdoelwit van die voorgestelde navorsingsprojek was om ouers/versorgers, onderwyseresse, spraaktaalterapeute en oudioloë, betrokke by die intervensie en opvoeding van die kind met gehoorverlies, se persepsies rakende die ouditief-verbale benadering tot opvoeding te beskryf en te verduidelik. Tydens die studie is daar semi-gestruktureerde onderhoude gevoer met onderskeidelik nege ouers van kinders, jonger as vier-jaar oud, met gehoorgestremdheid en met vier onderwyseresse wat betrokke is by die die opvoeding van genoemde ouers se kinders met gehoorverlies. Laastens is daar ook semi-gestruktureerde onderhoude gevoer met vier spraak-taalterapeute en twee oudioloë wat betrokke is by die verskaffing van intervensie aan kinders met gehoorverlies, jonger as vier-jaar oud. Al die deelnemers was verbonde aan ’n spesifieke sentrum vir kinders met gehoorverlies in die Wes-Kaap provinsie van Suid Afrika. Al die deelnemers het aangedui dat ouers betrek word by die besluitnemingsproses rakende die keuse van die mees geskikte kommunikasie-benadering vir die kind met gehoorverlies. Deelnemers het almal saamgestem dat ouers meestal die ouditief-verbale benadering tot kommunikasie-ontwikkeling vir hulle kind kies omdat spraak as kommunikasiemedium bekend is aan die ouers en verband hou met normaliteit. Ouers het aangedui dat die ouditief-verbale benadering die mees toepaslike benadering is vir enige kind met gehoorverlies. Onderwyseresse, spraak-taalterapeute en oudioloë het nie volkome saam met die ouers gestem nie en hulle het genoem dat daar sekere aspekte, byvoorbeeld die teenwoordigheid van bykomende gestremdhede, is wat oorweeg moet word voor daar besluit word of die kind die ouditief-verbale benadering tot kommunikasieontwikkeling moet volg. Deelnemers het oor die algemeen ‘n positiewe houding getoon teenoor die ouditief-verbale benadering en dit wil voorkom asof ouers, onderwyseresse, spraak-taalterapeute en oudioloë goeie begrip toon van die beginsels en uitkomstes van die benadering.
Camargo, Natália de. "Relações entre medidas de capacidade auditiva e desempenho em tarefas de percepção da fala em crianças com deficiência auditiva." Pontifícia Universidade Católica de São Paulo, 2013. https://tede2.pucsp.br/handle/handle/11954.
Full textConselho Nacional de Desenvolvimento Científico e Tecnológico
The purpose of the study was to establish the relationship between hearing capacity and performance on tasks of speech perception in children with hearing loss aiming at discussing factors related to effective utilization of residual hearing. Method: The procedures were performed at CeAC/DERDIC/PUCP. The Speech Intelligibility Indices (SII) were established for 55 and 65 dBSPL input sounds of ten children presenting bilateral sensorineural hearing loss, adapted with bilateral hearing aids, and which have oral language as the main mode of communication. They were submitted to a words and nonsense words repetition task either in two or three different intensities (52, 55 and 65 dBSPL). Their productions were analyzed according the criteria established by WASP Protocol and by Confusion Matrix. In the data analysis, the values of SII in the better ear were compared with the results obtained in each analysis criterion. Results: For voicing and word performance, there was a statistically significant difference between both stimuli in 55 dBSPL. For consonants, place of articulation and consonant substitution there was a statistically meaningful difference between stimuli types in 65 and 55 dBSPL and also between intensities 65 and 55 dBSPL in nonsense words. The percentage of correct words was small when compared to the percentage of correct consonants and place of articulation. Thus, the performance in the last criteria seemed more representative of the auditory capacity prescribed by SII 65, which ranged from 27% to 90% with major concentration of intermediary SII subjects. For performance of mode of articulation, there was a statistically significant difference between both words and nonsense words at 55 dBSPL and between 65 and 55 intensities in nonsense words. For performance in other error criteria, the analysis showed no statistically significant difference. Conclusion: With regards to the criterion of correct words, performance was, for most children, below the auditory capacity predicted, considering SII values. As to correct vowel performance, the investigation showed that these have ensured audibility. The criteria of performance in correct consonants and place of articulation seemed more representative of the auditory capacity anticipated by SII than the criterion of correct words performance. The performance regarding criteria of mode of articulation and voicing seem to suggest that these children were able to perceive these traits, probably due to low frequency band information. With regards to errors, the number of substitutions was higher than omissions. The characteristics of substitutions allow us to identify error orientation on certain consonant, while omissions allow for evaluating consonant audibility. Thus, the relationship between auditory capacity and performance on speech task perception cannot be considered in isolation since other factors are involved in this process, thus enabling the explanation of variability in performance. Audiological and therapeutic history, as well as linguistic and family characteristics can significantly interfere with performance given similar auditory capacity. Further studies are necessary to address these issues
O objetivo deste estudo foi estabelecer relações entre capacidade auditiva e desempenho em tarefas de percepção da fala em crianças com deficiência auditiva, visando discutir fatores determinantes na utilização efetiva da audição residual no processo de percepção da fala. Métodos: Os procedimentos foram realizados no CeAC/ Derdic/PUCSP. Foram estabelecidos os Índices de Inteligibilidade de Fala (SII) para sons de entradas de 55 e 65 dBNPS de dez crianças com perda auditiva neurossensorial usuárias de AASI bilateralmente que têm a linguagem oral como a principal modalidade de comunicação. As mesmas foram submetidas à tarefa de repetição de palavras com e sem sentido em duas ou três diferentes intensidades (52, 55 e 65 dBNPS). As emissões das crianças foram analisadas de acordo com os critérios estabelecidos no Protocolo WASP e na Matriz de Confusão. Na análise dos dados, o SII foi comparado com os resultados obtidos em cada critério de análise. Resultados: Para o desempenho em palavras e vozeamento houve diferença estatisticamente significante entre os dois tipos de estímulo em 55 dBNPS. Para o desempenho em consoantes, ponto de articulação e substituição das consoantes houve diferença estatisticamente significante entre os tipos de estímulos em 65 e 55 dBNPS e também entre as intensidades de 65 e 55 dBNPS nas palavras sem sentido. As porcentagens de acerto de palavras foram pequenas quando comparadas às porcentagens de acerto de consoantes e ponto de articulação. Assim sendo, o desempenho nestes dois últimos critérios pareceu melhor representar a capacidade auditiva prevista pelo SII 65, que variou de 27% a 90% com maior concentração de sujeitos com SII intermediários. Para o desempenho em modo de articulação houve diferença estatisticamente significante entre as palavras com e sem sentido na intensidade de 55 dBNPS e entre as intensidades de 65 e 55 dBNPS nas palavras sem sentido. Para o desempenho nos demais critérios de análise dos erros as diferenças não foram estatisticamente significantes. Conclusão: O desempenho no critério acerto de palavras foi para a grande maioria das crianças aquém do potencial auditivo previsto pelo SII. O desempenho no critério acerto de vogais demonstrou que estas têm audibilidade garantida. O desempenho nos critérios acerto de consoantes e de ponto de articulação pareceu melhor representar a capacidade auditiva prevista pelo SII do que o desempenho no critério acerto de palavras. O desempenho nos critérios modo de articulação e vozeamento parecem sugerir que são traços audíveis dada informação na faixa de frequências baixas. As características das substituições possibilitam identificar a orientação do erro em determinada consoante, ao passo que as omissões permitem avaliar a audibilidade da consoante. Assim sendo, a relação entre capacidade auditiva e desempenho em tarefas de percepção da fala não pode ser considerada isoladamente, uma vez que outros fatores estão envolvidos neste processo explicando a variabilidade no desempenho. Particularmente aspectos do histórico audiológico e terapêutico, desenvolvimento de linguagem e características da família podem interferir no desempenho, dada a mesma capacidade auditiva. Outros estudos são necessários
Shelley, Joseph M. "Methods for Incorporating Learning Styles in High School Computer Applications Classes." UNF Digital Commons, 1991. http://digitalcommons.unf.edu/etd/96.
Full textTantribeau, Patrick. "A stereo auditory image-perception aid for the blind /." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=56960.
Full textFor the study, the aid was implemented partly by using a personal computer, a computer graphics tablet, a digital-signal-processing board, and audio equipment. In addition, a Time-Multiplexer circuit was built to support inputs from two finger-probes which are made by using two styluses of the graphics tablet. The system softwares were programmed to present the images as stereo auditory display. The aid was evaluated on six blind-from-birth subjects and ten blindfolded sighted subjects to determine how fast and accurately they could perceive different multi-gray level images, and how their performance changed with increased experience. The results showed that, with increased experience, the same image presented in the second trial can be perceived in a shorter time than in the first trial. The subjects perceived the binary and the multi-gray level shapes within 2 minutes on average.
Van, Staden Marinda. "Verpleegsters werksaam in staatshospitale in Noordwes se persepsie van die oudiologiese manifestasies van MIV/VIGS in die pediatriese populasie." Diss., Pretoria : [s.n.], 2007. http://upetd.up.ac.za/thesis/available/etd-07222008-103443.
Full textTaylor, Eileen Zalkin. "The effects of in-group bias and decision aids on auditors' evidence evaluation." [Tampa, Fla] : University of South Florida, 2006. http://purl.fcla.edu/usf/dc/et/SFE0001572.
Full textGresele, Amanda Dal Piva. "COMPRESSÃO DE FREQUÊNCIAS: RECONHECIMENTO DE FALA EM IDOSOS COM PERDA AUDITIVA DE CONFIGURAÇÃO DESCENDENTE." Universidade Federal de Santa Maria, 2013. http://repositorio.ufsm.br/handle/1/6562.
Full textPurpose: to evaluate and compare the performance of elderly people with descending hearing loss, still considering the presence or absence of dead regions in cochlea (DRs), in speech recognition tests, in silence and in noise, using auditory prostheses with and without the activation of the nonlinear frequency compression (NLFC). Materials and Methods: the study presents quantitative, observational, descriptive, and transversal traits. 48 subjects were evaluated: 33 men and 15 women, aged between 61 and 84 years, with mild to moderate hearing loss and descending configuration. In order to collect the data the Lists of Sentences in Portuguese test was used (LSP), seeking the Sentence Recognition Thresholds in Silence (LRSS), the Sentences Recognition Threshold in Noise (LRSR) expressed by the signal/noise relationship (S/R) and Percentage Index Sentence Recognition of Threshold in Silence (IPRSS) and in noise (IPRSR). The subjects were evaluated using binaural auditory prostheses, which had their adjustments verified through measurements with a probe microphone. All measurements were obtained using auditory prostheses both without the activation of the NLFC (SC) and with the activation of the NLFC (CC). For the analysis of collected data, the subjects were distributed in two formats; in one study the 48 subjects comprised a sample, in the other, considering the results obtained in the DRs identification test, the subjects distributed themselves in Group A (24 elderly people without evidence of DRs) and Group B (14 elderly people with evidence of DRs). Results: in the first study, a statistically significant difference between LRSS and IPRSS obtained using auditory prostheses SC and CC was observed, the latter being those that provided the better results. In the S/R relationship and in the IPRSR there was no statistically significant difference observed between the use of auditory prostheses SC and CC. In the second study analyzing the results of group A and B separately, in both a statistically significant difference in performance between the IPRSS obtained using auditory prostheses SC and CC, the latter being those that provided the better results. There was no difference observed in IPRSR. Comparing the groups, one verifies that there was no statistically significant difference in performance in IPRSS SC, IPRSS CC, and in IPRSR CC. Yet, the IPRSR SC presented statistically significant difference between the groups, the best being the performance of Group B. Conclusion: in the first study, the general sample presented statistically significant improvement in the measurements obtained in silence using auditory prostheses with CNLF if compared to the auditory prostheses without NLFC. In noise, no difference in performance was verified with or without NLFC. In the second study, both the group of subjects without and the group with DRs obtained statistically significant improvement in performance, in silence, using auditory prostheses with NLFC, in noise, however, there was no difference. Comparing the groups with and without DRs, the only measure that presented a significant difference was that obtained in noise with auditory prostheses without NLFC, in which the group with DRs obtained better performance than the group without DRs.
Objetivo: avaliar e comparar o desempenho de idosos com perda auditiva de configuração descendente, considerando ainda a presença ou não de zonas mortas na cóclea (ZMC) em testes de reconhecimento de fala, no silêncio e no ruído, usando próteses auditivas sem e com a ativação do algoritmo de compressão não linear de frequências (CNLF). Material e método: o estudo apresenta caráter quantitativo, observacional, descritivo e transversal. Foram avaliados 48 sujeitos, sendo 33 homens e 15 mulheres, com idade entre 61 e 84 anos, perda auditiva de grau leve a moderado e configuração descendente, sem experiência com o uso de próteses auditivas. Para coleta dos dados, foi utilizado o teste Listas de Sentenças em Português (LSP), sendo pesquisados os Limiares de Reconhecimento de Sentenças no Silêncio (LRSS), relações sinal/ruído (S/R) e Índices Percentuais de Reconhecimento de Sentenças no Silêncio (IPRSS) e no ruído (IPRSR). Os sujeitos foram avaliados usando próteses auditivas de forma binaural, as quais tiveram seus ajustes verificados por meio de mensurações com microfone sonda. Todas as medidas foram obtidas com o uso de próteses auditivas sem a ativação da CNLF (SC) e com próteses auditivas com a CNLF ativada (CC). Para análise dos dados, os sujeitos foram distribuídos de duas formas: em um estudo os 48 sujeitos compuseram a amostra; em outro, considerando os resultados obtidos no teste para identificação de ZMC, distribuíram-se os sujeitos em Grupo A (24 idosos sem indícios de ZMC) e Grupo B (14 idosos com indícios de ZMC). Resultados: considerando a amostra geral, foi observada diferença estatisticamente significante entre os LRSS e IPRSS obtidos usando próteses auditivas SC e CC, sendo as últimas as que proporcionaram melhores resultados. Na relação S/R e IPRSR, não foi observada diferença estatisticamente significante entre o uso de próteses auditivas SC e CC. Analisando-se separadamente os resultados do grupo A e B, em ambos observou-se diferença estatisticamente significante de desempenho entre os IPRSS obtidos usando próteses auditivas SC e CC, sendo as últimas as que proporcionaram melhores resultados. Não foi observada diferença no IPRSR. Comparando-se os grupos A e B, verificou-se que não houve diferença estatisticamente significante de desempenho no IPRSS SC, no IPRSS CC e no IPRSR CC. Já o IPRSR SC apresentou diferença estatisticamente significante entre os grupos, sendo o melhor o desempenho do grupo B. Conclusão: Considerando-se a amostra geral, no silêncio, as próteses auditivas CC proporcionaram maiores benefícios do que as SC. No ruído, o reconhecimento de fala foi semelhante com o uso de próteses auditivas SC e CC. Considerando-se a presença de ZMC, no silêncio, tanto no grupo de idosos sem quanto no com ZMC, o uso de próteses auditivas CC apresentou tendência a proporcionar maiores benefícios do que as SC. No ruído, os resultados foram semelhantes nas condições SC e CC em ambos os grupos. Comparando-se os grupos sem e com ZMC, a única medida que apresentou diferença significante foi a obtida no ruído com próteses auditivas CC, na qual o grupo com ZMC obteve desempenho melhor do que o sem ZMC.
Huen, Myron. "Hearing aid processing of auditory evoked potential stimuli : acoustic effects." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/57582.
Full textMedicine, Faculty of
Audiology and Speech Sciences, School of
Graduate
Marley, Robert N. "An Empirical Investigation of Decision Aids to Improve Auditor Effectiveness in Analytical Review." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3232.
Full textGrobbelaar, Annerina. "Linear frequency transposition and word recognition abilities of children with moderate-to-severe sensorineural hearing loss." Diss., Pretoria : [s. n.], 2009. http://upetd.up.ac.za/thesis/available/etd-03112010-104801.
Full textGomaa, Mohamed Ismail Ibrahim. "The effect of time pressure, task complexity and litigation risk on auditors' reliance on decision aids." Maastricht : Maastricht : UPM, Universitaire Pers Maastricht ; University Library, Maastricht University [Host], 2005. http://arno.unimaas.nl/show.cgi?fid=6461.
Full textMueller, Jennifer M. "The Effects of Goal Framing on Auditors' Use of a Decision Aid in Environments of Varied Risk." Diss., Virginia Tech, 2000. http://hdl.handle.net/10919/37642.
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Meagher, Kelsey Marie. "Effects of hearing aid processing on cortical auditory evoked potentials in normal hearing individuals." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/64172.
Full textMedicine, Faculty of
Audiology and Speech Sciences, School of
Graduate
Vieira, Eliara Pinto [UNIFESP]. "Mutações genéticas da deficiência auditiva: avaliação comportamental e eletrofisiológica da audição sem e com prótese auditiva em crianças." Universidade Federal de São Paulo (UNIFESP), 2011. http://repositorio.unifesp.br/handle/11600/9832.
Full textAs BMPs, proteínas indutoras de crescimento ósseo, desde o início de sua utilização têm sido avaliadas em diferentes modelos experimentais objetivando determinar sua eficácia. Sabemos que algumas substâncias podem interferir positiva ou negativamente quando utilizadas de forma sistêmica ou local, associadas à BMP. Objetivo: Este estudo tem por objetivo avaliar as possíveis interferências da utilização de antibioticoterapia profilática pré e pós-operatória, utilizando-se como princípio ativo a cefazolina, aplicada a um modelo experimental em coelhos. Métodos: Foram utilizados dois grupos de coelhos fêmea, neozelandeses, submetidos à artrodese intertransversa da coluna lombar, segmento L5-L6, por via posterior. No primeiro grupo foi utilizado o enxerto autólogo associado ao biocomposto (BMP bovino, 1,0mg e hidroxiapatita, 9,0mg). No segundo grupo foi realizado o mesmo procedimento e utilizado o mesmo biocomposto, porém os animais foram submetidos a antibioticoterapia profilática com cefazolina iniciada duas horas antes e mantida por 24 horas após o término do procedimento. Os animais foram acompanhados por 15 semanas, isolados em cativeiro e avaliados diariamente por veterinário sob o ponto de vista clínico e neurológico, sendo posteriormente sacrificados e retiradas as peças cirúrgicas para serem submetidas à análise radiográfica e histológica. Resultados: Para o grupo 1, a quantidade e localização do material implantado variaram entre os indivíduos, porém, na maioria dos casos (6 amostras), a quantidade de partículas de osso homólogo era insignificante e estava dispersa ao longo do tecido mole que recobre o dorso da vértebra, circundado por tecido reacional com área de necrose. Nos demais casos as partículas com reabsorção preenchiam o reduzido espaço entre os processos transversos. Para o grupo 2, a quantidade do material e sua localização também variaram entre os indivíduos. Na maioria dos casos inúmeras partículas de osso mole preenchiam o espaço entre os processos laterais cuja neoformação óssea levou ao aprisionamento de algumas dessas partículas. Todos os casos exibiram formação em maior ou menor intensidade de tecido cartilaginoso na superfície dos processos transversos. A análise radiográfica mostrou em sua freqüência relativa maior freqüência de fusão completa para o grupo 2 quando comparado ao grupo 1. Conclusão: Do ponto de vista histológico para o modelo e período experimental analisado, inferimos que, embora nenhum dos tratamentos propostos tenha promovido o completo fusionamento das vértebras por tecido ósseo, a utilização de osso homólogo + BMP bovina, associada à aplicação de cefazolina, promoveu maior formação cartilaginosa e óssea com menor índice de rejeição do material enxertado na área doadora, quando comparada ao grupo sem associação de cefazolina. Do ponto de vista radiográfico, a análise relativa também demonstrou-se superior para o grupo onde foi utilizado cefazolina.
The BMPs, the inductive proteins of bone growth since the beginning of their use have been evaluated in different experimental models aiming to determine their efficacy. We know that some substances can interfere positively or negatively when used in a systemic way or places associated with the BMP. Objective: this study objective to evaluate the possible interferences of antibiotic-therapy by using the active principle of cefazolin in an experimental model with rabbits. Methods: Two groups of female New Zealand rabbits underwent a lumbar spine inter-transverse artrodesys of segment L5-L6 using posterior approach. An homolog bone graft associated with a bio-compound (bovine BMP, 1,0mg and hydroxiapatita, 9,0mg) was used in the first group. The same procedure and bio-compound were used in the second group. However the animals were submitted to a prophylactic antibiotic-therapy with cefazolin starting two hours before the procedure and maintained for 24 hours after surgery. The animals were analyzed for 15 weeks, isolated in captivity and daily evaluated by a veterinarian under the clinical and neurological views and then euthanized, being the surgical pieces removed and submitted to a radiological and histological analysis. Results: For the first group the quantity and location of the implanted material varied among the individuals. However in most of the cases, the quantity and particles of homolog bone was insignificant and disperse along the soft tissue that covers the posterior region of the vertebrae. In the other cases, the particles with reabsorvation filled the reduced space between the transversal processes. For the second group, the quantity of material and its location also varied among the individuals. In most of the cases, several particles of homolog bone filled the space between the lateral processes whose bone neo-formation led to a trapping of these particles. All the cases showed formation in a higher or lower intensity of the cartilaginous tissue in the surface of the transverse processes. The radiological analysis showed in its relative frequency a higher frequency of complete fusion for group 2 when compared to group 1. Conclusion: Under the histological view for the model and experimental period analyzed, we inferred that, despite the fact that none of the proposed treatments had promoted a complete fusion of the vertebraes per bone tissue, the use of homolog bone + bovine BMPs associated with the use of cefazolin promoted a higher cartilaginous and bone formation with lower incidence of rejection of the material grafted in the doer area when compared to the group without the association of cefazolin. Under the radiological view, the relative analysis also showed to be superior in the group where cefazolin was used as a prophylactic antibiotic.
TEDE
BV UNIFESP: Teses e dissertações
Aroudi, Ali [Verfasser]. "Cognitive-Driven Speech Enhancement using EEG-based Auditory Attention Decoding for Hearing Aid Applications / Ali Aroudi." München : Verlag Dr. Hut, 2021. http://d-nb.info/1232846716/34.
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