Dissertations / Theses on the topic 'Vestibular apparatus'
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Li, Chuan. "Spatial coding of gravitational input to the vestibuloolivary pathway and its refinement in development." Click to view the E-thesis via HKUTO, 2005. http://sunzi.lib.hku.hk/hkuto/record/B31539609.
Full textLee, Son Gregory Martin. "Vestibular connectivity to soleus motor units during quiet stance." Thesis, University of British Columbia, 2007. http://www.oregonpdf.org.
Full textManczak, Tiago. "Estimulador galvânico vestibular para fMRI." Universidade Tecnológica Federal do Paraná, 2012. http://repositorio.utfpr.edu.br/jspui/handle/1/406.
Full textThis work presents the development of a galvanic vestibular stimulator to be used in functional magnetic resonance imaging experiments (fMRI). In fMRI experiments it is required the production of somatosensory stimuli in the patient must be sincronized with the fMRI pulse sequence. The stimulator circuits were divided in analog circuits (placed within the magnet room) and digital circuits (placed in the MRI command room). The communication between the circuits is made through optical fiber. fMRI experiments performed with volunteers demonstrated that the proposed stimulator is able to keep the sincronization with the MRI system and can be used to locate the brain areas that are activated by the vestibular system.
Li, Chuan, and 李川. "Spatial coding of gravitational input to the vestibuloolivary pathway and its refinement in development." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B31539609.
Full textSansom, Andrew J., and n/a. "The role of calcium-dependent pathways in vestibular compensation." University of Otago. Department of Pharmacology & Toxicology, 2005. http://adt.otago.ac.nz./public/adt-NZDU20070418.145158.
Full textGoddard, Matthew John, and n/a. "Cognitive and emotional effects of vestibular damage in rats and their medial temporal lobe substrates." University of Otago. Department of Pharmacology & Toxicology, 2008. http://adt.otago.ac.nz./public/adt-NZDU20080923.091605.
Full textLau, Yau-pok. "Postnatal development of thalamic neurons in response to vertical movement /." View the Table of Contents & Abstract, 2007. http://sunzi.lib.hku.hk/hkuto/record/B3834810X.
Full text劉友璞 and Yau-pok Lau. "Postnatal development of thalamic neurons in response to vertical movement." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B45011369.
Full textKnox, Craig A. "A model for morphological change in the hominid vestibular system in association with the rise of bipedalism." Virtual Press, 2007. http://liblink.bsu.edu/uhtbin/catkey/1371468.
Full textDepartment of Anthropology
Moravec, William J. "Tuning in vestibular hair cells of a turtle Trachemys scripta /." Ohio : Ohio University, 2006. http://www.ohiolink.edu/etd/view.cgi?ohiou1149291414.
Full textMacdougall, Hamish G. "The human eye-movement response to maintained surface galvanic vestibular stimulation." Phd thesis, School of Psychology, 2003. http://hdl.handle.net/2123/10402.
Full textGliddon, C. M., and n/a. "An attempt to elucidate the role of GABAA receptors in vestibular compensation." University of Otago. Department of Pharmacology & Toxicology, 2006. http://adt.otago.ac.nz./public/adt-NZDU20070427.150754.
Full textSun, Bing, and 孫冰. "Vestibular influence on central cardiovascular regulation in the rat: functional and anatomical aspects." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B31244774.
Full textWood, Noel. "The efficacy of Vestibular Rehabilitation: A Meta-analysis." Honors in the Major Thesis, University of Central Florida, 2000. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/680.
Full textB.S.
Bachelors
Health and Public Affairs
Communicative Disorders
Thurtell, Matthew James. "Effect of eye position on the three-dimensional kinematics of saccadic and vestibular-evoked eye movements." Thesis, The University of Sydney, 2005. http://hdl.handle.net/2123/1665.
Full textThurtell, Matthew James. "Effect of eye position on the three-dimensional kinematics of saccadic and vestibular-evoked eye movements." Faculty of Medicine, 2005. http://hdl.handle.net/2123/1665.
Full textSaccadic and vestibular-evoked eye movements are similar in that their three-dimensional kinematic properties show eye position-dependence. When the line of sight is directed towards an eccentric target, the eye velocity axis tilts in a manner that depends on the instantaneous position of the eye in the head, with the magnitude of tilt also depending on whether the eye movement is saccadic or vestibular-evoked. The mechanism responsible for producing eye velocity axis tilting phenomena is not well understood. Some authorities have suggested that muscle pulleys in the orbit are critical for implementing eye velocity axis tilting, while others have suggested that the cerebellum plays an important role. In the current study, three-dimensional eye and head rotation data were acquired, using the magnetic search coil technique, to confirm the presence of eye position-dependent eye velocity axis tilting during saccadic eye movements. Both normal humans and humans with cerebellar atrophy were studied. While the humans with cerebellar atrophy were noted to have abnormalities in the two-dimensional metrics and consistency of their saccadic eye movements, the eye position-dependent eye velocity axis tilts were similar to those observed in the normal subjects. A mathematical model of the human saccadic and vestibular systems was utilized to investigate the means by which these eye position-dependent properties may arise for both types of eye movement. The predictions of the saccadic model were compared with the saccadic data obtained in the current study, while the predictions of the vestibular model were compared with vestibular-evoked eye movement data obtained in a previous study. The results from the model simulations suggest that the muscle pulleys are responsible for bringing about eye position-dependent eye velocity axis tilting for both saccadic and vestibular-evoked eye movements, and that these phenomena are not centrally programmed.
Penberthy, Marie Louise. "The identification of vestibular processing dysfunction in disorders of sensory integration." Master's thesis, University of Cape Town, 1985. http://hdl.handle.net/11427/26447.
Full textSchwartz, Robert Lee. "Vestibular and Electromagnetic Stimulation: Their Effects on Intellectual Performance and Mood State." Thesis, University of North Texas, 1991. https://digital.library.unt.edu/ark:/67531/metadc332751/.
Full textRülander, Britta Angela. "Galvanic vestibular stimulator for fMRI research." Universidade Tecnológica Federal do Paraná, 2016. http://repositorio.utfpr.edu.br/jspui/handle/1/1843.
Full textThis master thesis presents the further development of a galvanic vestibular stimulator for use in fMRI examinations developed in a previous thesis (MANCZAK, 2012). This thesis amends the GVS by circuits to measure feedback values and implements the stimulation circuit with digital components, such as a microcontroller and flyback integrated circuits. The microcontroller is used in order to control the current source and process the measured values. The communication between the PC, which allows user interaction through a graphical user interface, and the microcontroller is implemented through optical communication, which is defined by a communication protocol specification. The digital circuitry is designed to be placed within the MRI room, meeting the requirements imposed by strong magnetic fields and radio frequency pulses. The underlying hypothesis of the thesis is that the device can be placed within the MRI room without having a negative impact on the MRI image quality. Laboratory tests without the MRI confirmed the correct design of the galvanic vestibular stimulator.
Justina, Hellen Mathei Della. "Interação entre as áreas funcionais do sistema visual e do sistema vestibular: estudo com RMF e EGV." Universidade Tecnológica Federal do Paraná, 2014. http://repositorio.utfpr.edu.br/jspui/handle/1/850.
Full textO equilíbrio estático corporal é comandado por três sistemas sensoriais: o sistema vestibular, responsável pelas informações sobre a posição e os movimentos da cabeça; o sistema visual, que informa a posição espacial dos objetos em relação ao nosso corpo; e o sistema proprioceptivo, que controla a postura e a movimentação corporal. Estes três sistemas devem funcionar sempre em sintonia, caso contrário, o indivíduo apresentará problemas de equilíbrio. Dessa forma, é importante caracterizar as regiões corticais, bem como suas interações, envolvidas neste processo. Para isto, é necessário a utilização de técnicas de neuroimagem funcional, sendo a ressonância magnética funcional (RMf) uma das técnicas mais utilizadas neste campo nos dias de hoje. Entretanto, uma grande parte dos experimentos de RMf requer o uso de aparelhos eletrônicos para produzir estimulações somatosensoriais no corpo humano, onde a principal dificuldade é o seu ambiente hostil aos circuitos eletrônicos. A estimulação galvânica vestibular é um dos métodos mais utilizados para estimular o sistema vestibular. Esta consiste em fornecer uma corrente de baixa amplitude diretamente nas aferências vestibulares, a qual atua no disparo dos neurônios vestibulares primários atingindo principalmente as aferências otolíticas e as fibras dos canais semicirculares. O objetivo deste trabalho é analisar e avaliar as áreas cerebrais envolvidas com as estimulações visual e galvânica vestibular e suas interações, utilizando a técnica de RMf e um estimulador galvânico vestibular. Para tanto, como primeira etapa desta pesquisa, validou-se in vivo um estimulador galvânico vestibular. O estimulador elétrico não interferiu de forma significativa na qualidade das imagens de ressonância magnética e pode ser utilizado com segurança nos experimentos de RMf. Testes foram realizados para determinar um eletrodo suficientemente confortável para o voluntário durante a estimulação galvânica vestibular e que não causasse artefato nas imagens. Após estas etapas concluídas, 24 voluntários foram selecionados para realizarem três tarefas: uma puramente visual (um tabuleiro de xadrez piscante no centro da tela), uma puramente vestibular (pela aplicação da estimulação galvânica vestibular) e uma simultânea, com a apresentação em conjunto dos estímulos visual e vestibular. A estimulação puramente visual mostrou ativação dos córtices visual primário e associativo, enquanto que a estimulação puramente vestibular levou a ativação das principais áreas envolvidas com a função multimodal do sistema vestibular, como o córtex parietoinsular vestibular, o lóbulo parietal inferior, o giro temporal superior, o giro pré-central e o cerebelo. A estimulação simultânea dos sistemas visual e vestibular resultou na ativação dos giros frontal médio e inferior. Além do padrão de interação visual-vestibular inibitório recíproco ter sido mais evidente durante a condição simultânea, observou-se que as regiões frontais (córtex dorsomedial pré-frontal e giro frontal superior) estão envolvidas com o processamento da função executiva quando existem informações conflitantes dos sistemas visual e vestibular.
The static body equilibrium is controlled by three sensory systems: the vestibular system, responsible for informing the position and the movements of the head; the visual system, which informs the spatial objects position relative to the body; and the proprioceptive system, which controls posture and body movements. These three systems must always work in harmony, otherwise the individual will present balance problems. Thus, it is important to characterize the cortical regions, as well as their interactions, involved in this process. For this it is necessary to use functional neuroimaging techniques, the functional magnetic resonance imaging (fMRI) is one of the most used techniques in this field nowadays. However, a large fMRI experiments require the use of electronic devices for producing somatosensory stimulation in the human body, where the main difficulty is its hostile environment for electronic circuits. The galvanic vestibular stimulation is one of the most used methods to stimulate the vestibular system. This stimulation consist of applying a low current amplitude directly on vestibular afferents, which acts firing the primary vestibular neurons, affecting the otolithic afferents and the semicircular canals fibers. The objective of this work is to evaluate and analyze the brain areas involved with visual and galvanic vestibular stimulations and their interactions using fMRI. Therefore, as a first step of this research, a galvanic vestibular stimulator was validated in vivo. The electrical stimulator did not interfere in a significance way on magnetic resonance images quality and could be safely used in fMRI experiments. Tests were performed to select an electrode sufficiently comfortable for the volunteer during the galvanic vestibular stimulation and that do not cause artifacts in the images. After completed these steps, 24 subjects were selected to perform three tasks: a purely visual (a flashing checkerboard in the center of the screen), a purely vestibular (with application of galvanic vestibular stimulation) and a simultaneous, presenting the visual and vestibular stimuli together. The purely visual stimulation showed activation of the primary and associative visual cortices, while the purely vestibular stimulation led to activation of areas involved in multimodal function of the vestibular system, such as the parieto-insular vestibular cortex, the inferior parietal lobe, the superior temporal gyrus, the precentral gyrus and the cerebellum. The simultaneous stimulation of visual and vestibular systems resulted in activation of the middle and inferior frontal gyri. In addition to the reciprocal inhibitory visualvestibular interaction pattern had been more evident during the simultaneous condition, it was observed that frontal regions (dorsomedial prefrontal cortex and superior frontal gyrus) are involved with the executive function processing when there is conflicting information of visual and vestibular systems.
Brown, Michael Patrick. "Effect of Ototoxic Drugs on the Amphibian Auditory System: Injection of Gentamicin Sulfate into Anuran Otic Capsules and Recovery of Thresholds." PDXScholar, 1995. https://pdxscholar.library.pdx.edu/open_access_etds/4858.
Full textXue, Jingbing. "Morphometry of Hair Cell Bundles and Otoconial Membranes in the Utricle of a Turtle, Trachemys scripta." Ohio : Ohio University, 2006. http://www.ohiolink.edu/etd/view.cgi?ohiou1155672444.
Full textJanky, Kristen L. "Unilateral centrifugation effects of age, translation method and vestibular disease on ocular torsion and SVV /." 2009. http://proquest.umi.com/pqdweb?did=1826156721&sid=5&Fmt=2&clientId=14215&RQT=309&VName=PQD.
Full textTitle from title screen (site viewed January 12, 2010). PDF text: v, 128 p. : ill. ; 1 Mb. UMI publication number: AAT 3360500. Includes bibliographical references. Also available in microfilm and microfiche formats.
White, Owen Bruce. "Vestibular projections to motor cortex in cat and monkey." Phd thesis, 1989. http://hdl.handle.net/1885/143033.
Full textZikovitz, Daniel C. "Self-motion perception through visual optic flow and vestibular cues." 1998. http://wwwlib.umi.com/cr/yorku/fullcit?pMQ39249.
Full textTypescript. Includes bibliographical references (leaves. Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://wwwlib.umi.com/cr/yorku/fullcit?pMQ39249.
Berry, Natanya Lee. ""It's been a helluva year": the experience of vestibular disorders on the significant other's quality of life." Thesis, 2017. https://hdl.handle.net/10539/23835.
Full textIn health care, there appears to be greater consideration for the biopsychosocial model of disability and viewing disability in terms of functional health. Recently, the effect of impairment on the significant other’s (SO’s) quality of life (QOL) has been explored. In audiology, there appear to be very few published studies in this area, particularly related to vestibular disorders. The purpose of this study was to investigate the experiences of vestibular disorders on the SO’s QOL. A qualitative research design was employed, including 11 interviews and two focus groups. Participants were SO’s of individuals with chronic vestibular disorders, and were recruited from a private audiology practice in Gauteng through purposive sampling strategies. Data were analysed using thematic analysis. Eight primary themes emerged in the data analysis: social implications, financial implications, searching for a diagnosis, emotional effects, changes in family dynamics, support systems, comparison-oriented coping mechanisms, and referrals for psychological services. Findings suggested that SO’s experienced third-party vestibular disability; however, having the appropriate support systems, including family and friends, was pertinent. It was also indicated that the relationship with the audiologist was essential in providing better understanding of the condition and prognosis thereof, resulting in less frustration and improved adaptation to the reported changes. A key finding was the lack of referral for psychological or counselling services. These findings suggest the need to account for third-party vestibular disability in clinical, theoretical, and academic settings, and they call for the inclusion of third-party disability in policy-making.
MT 2018
McElhinney, Sarah-Anne. "A comparison of ocular and cervical vestibular evoked myogenic potentials in the evaluation of different stages of clinically certain Ménière's disease : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Audiology in the Department of Communication Disorders at the University of Canterbury /." 2009. http://hdl.handle.net/10092/3217.
Full textHammam, Elie. "Physiological studies of the vestibulosympathetic reflex in humans." Thesis, 2014. http://handle.uws.edu.au:8081/1959.7/uws:33178.
Full textHill, Patricia M. "Vestibular dysfunction associated with chronic traumatic brain injury in amateur rugby players." 2005. http://www.oregonpdf.org.
Full textIncludes bibliographical references (leaves 158-166). Also available online (PDF file) by a subscription to the set or by purchasing the individual file.
Fu, Siu-ngor. "Postural disturbance in subjects with multiple ankle sprains the role of somatosensory and vestibular systems /." 2003. http://www.oregonpdf.org.
Full textIncludes bibliographical references (leaves 199-216). Also available online (PDF file) by a subscription to the set or by purchasing the individual file.
Foster, Monique. "The effects of low-frequency sinusoidal linear acceleration on skin sympathetic nerve activity in humans." Thesis, 2017. http://hdl.handle.net/1959.7/uws:45938.
Full textRezlerová, Pavlína. "Vyšetření dynamické zrakové ostrosti u zdravých jedinců." Master's thesis, 2017. http://www.nusl.cz/ntk/nusl-369082.
Full textHlaváčková, Anna. "Využití virtuální reality ke zhodnocení dynamické posturální stability u hráčů beachvolejbalu." Master's thesis, 2017. http://www.nusl.cz/ntk/nusl-353286.
Full textPakan, Janelle. "General principles of cerebellar organization : correlating anatomy, physiology and biochemistry in the pigeon vestibulocerebellum." Phd thesis, 2009. http://hdl.handle.net/10048/530.
Full textA thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Doctor of Philosophy, Centre for Neuroscience. Title from pdf file main screen (viewed on August 25, 2009). Includes bibliographical references.
Claassens, Heidi. "Persepsie van grondslagfase-onderwysers en ouers aangaande die effektiwiteit van vestibulere oefeninge om sensoriese en motoriese ontwikkeling te bevorder." Diss., 2020. http://hdl.handle.net/10500/27175.
Full textInklusiewe onderrig ondersteun die insluiting van alle leerders met verskillende behoeftes en vaardighede in klaskamers, wat baie keer te groot, of te verskillend vir doeltreffende onderrig is. Beweging as deel van ‘n vroeë leerervaring is noodsaaklik vir optimale neurale ontwikkeling. Dit beïnvloed organisasie en stimuleer die spesifieke neurologiese sisteme nodig vir optimale funksionering en ontwikkeling van die brein. Sensoriese integrasie disfunksie word gesien as die wortel van baie leerprobleme. Die vestibulêre sisteem is direk verbind met die sensoriese en motoriese sisteme. ‘n Sensoriese integrasie disfunksie het ‘n duidelike invloed op die vestibulêre sisteem. Die vestibulêre sisteem het baie interkonneksies met baie dele in die brein, byvoorbeeld propriosepsie en die tassisteem. Doeltreffende funksionering van die sensoriese, motoriese en vestibulêre sisteme word verlang vir ‘n hoë vlak van prestasieverrigting in sport en akademie. Wanneer die vestibulêre sisteem gestimuleer word, het dit ‘n direkte positiewe invloed op die sensoriese en motoriese ontwikkeling van leerders. Die doel van hierdie studie was om te bepaal wat die persepsie van grondslagfase-onderwysers en ouers is oor die rol en voordele wat vestibulêre oefeninge te weeg kan bring in die motoriese en sensoriese ontwikkeling van leerders. Leerders in graad 1 van ‘n privaatskool, asook van grade 2 en 3 van ‘n plaasskool is gekies as deelnemers in die studie. Die keuse van leerders was op grond van die bereidwilligheid van hulle en hul ouers om aan die studie deel te neem. Leerders het ‘n vestibulêre oefenprogram drie maal per week gedoen vir die tydperk van agt weke. Observasie-vraelyste is deur onderwysers en ouers ingevul na afloop van die derde sessie elke week. Vir die vraelys het ouers en onderwysers gekyk na die verbetering in aandagspan, konsentrasie, luistervaardigheid, oogkontak, sosiale interaksie en samewerking. Onderhoude is met ouers en onderwysers gedoen na aanleiding van die observasievraelyste wat vir die agt weke voltooi is. Transkripsies van die onderhoude is gedoen en afleidings is gemaak deur analise van die observasie-vraelyste en die getranskribeerde onderhoude. Al ses die ontwikkelingsareas by beide skole het verbetering getoon oor die agt weke. Dit dui daarop dat vestibulêre oefeninge wel ‘n invloed op die sensoriese en motoriese ontwikkeling het.
Inclusive education promotes the inclusion of learners with different needs and capabilities in classes which are often too big and diverse for effective teaching. Movement as an early learning experience is necessary for optimal neural development. It influences organisation and stimulates the specific neurological systems required for optimal functioning and development of the brain. Sensory integrative dysfunction is believed to be at the root of many learning disorders. The vestibular system is directly connected with the sensory and motor systems. The vestibular system will be directly affected when a sensory integrations dysfunction presents. In fact, the vestibular system has many interconnections with almost every other part of the brain like proprioception and the tactile system. Proper functioning of the sensory, motor and vestibular systems is required for higher level performance in sport and academics. When the vestibular system is stimulated, it will result in a positive influence on the sensory and motor development of learners. The aim of this study is to determine the perceptions of foundation phase teachers and parents regarding the role or benefits of vestibular exercises in promoting learners’ motor and sensory development. Learners in Grade 1 of a private school and Grade 2 and 3 learners of a farm school in the northern Free State were selected as participants in the research. Learners were selected on the basis of the willingness of them and their parents to participate in the research. The participants did exercise sessions three times a week for thirty minutes over a period of eight weeks. Observation sheets were completed for all eight weeks, for the duration of the exercise program, by teachers and parents. These sheets were completed weekly after the third sessions in that week. The observation sheets listed concentration, attention span, listening, eye contact, cooperation, social interaction and self-esteem as developmental areas. Interviews were done after the period of eight weeks with the parents and teachers. The interviews conducted with both parties were taped and meticulously transcribed. This helped the researcher to get a better understanding of the study and to analise data and draw conclusions.All six areas of development showed improvement at both schools over the period of eight weeks. This indicates that stimulating the vestibular system promotes sensory and motor development.
Inclusive Education
M. Ed. (Inklusiewe Onderwys)