Dissertations / Theses on the topic 'Electrooculography'
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Erkent, Ozgur. "An Eye Movement Analysis Of Chess Players Across Levels Of Expertise: An Electrooculography Study." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/2/12605407/index.pdf.
Full textEbrahim, Parisa [Verfasser], and Bin [Akademischer Betreuer] Yang. "Driver drowsiness monitoring using eye movement features derived from electrooculography / Parisa Ebrahim ; Betreuer: Bin Yang." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2016. http://d-nb.info/1118370554/34.
Full textFejgl, Martin. "Fokusace očí na charakteristické prvky vizuálního vjemu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219214.
Full textNěmcová, Andrea. "Hodnocení únavy pomocí elektrookulografie." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220869.
Full textParks, Nathan Allen. "Neural mechanisms of short-term visual plasticity and cortical disinhbition." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28163.
Full textCommittee Chair: Dr. Paul Corballis, Ph.D.; Committee Member: Dr. Daniel Spieler, Ph.D.; Committee Member: Dr. Eric Schumacher, Ph.D.; Committee Member: Dr. Krish Sathian, M.D., Ph.D.; Committee Member: Dr. Randall Engle, Ph.D.
Hasan, Md Mahmudul. "Biomedical signal based drowsiness detection using machine learning: Singular and hybrid signal approaches." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/211388/1/Md%20Mahmudul_Hasan_Thesis.pdf.
Full textEstepp, Justin Ronald. "An improved adaptive filtering approach for removing artifact from the electroencephalogram." Wright State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=wright1433244703.
Full textRoulet, Christophe. "Etude et réalisation de systèmes de mesures et de traitements de l'activité oculo-motrice et gestuelle chez l'homme : application à l'activité physique et sportive et à l'ergonomie." Grenoble 1, 1987. http://www.theses.fr/1987GRE10175.
Full textCoughlin, Michael J., and n/a. "Calibration of Two Dimensional Saccadic Electro-Oculograms Using Artificial Neural Networks." Griffith University. School of Applied Psychology, 2003. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20030409.110949.
Full textCoughlin, Michael J. "Calibration of Two Dimensional Saccadic Electro-Oculograms Using Artificial Neural Networks." Thesis, Griffith University, 2003. http://hdl.handle.net/10072/365854.
Full textThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Applied Psychology
Griffith Health
Full Text
MEILLAT, OLIVIER. "Troubles de la poursuite et de la reponse opto-cinetique dans les strabismes avec nystagmus latent." Lyon 1, 1989. http://www.theses.fr/1989LYO1M393.
Full textBertholon, Pierre Nicolas. "L'interet de l'electro-oculographie informatisee dans la pathologie vasculaire du tronc cerebral et du cervelet : a propos de 20 observations." Saint-Etienne, 1992. http://www.theses.fr/1992STET6423.
Full textWioland, Norma. "Contribution à l'étude des potentiels lents générés par la rétine : analyse électrophysiologique chez le poulet in vivo." Université Louis Pasteur (Strasbourg) (1971-2008), 1989. http://www.theses.fr/1989STR1BH17.
Full textJelena, Đorđević-Kozarov. "Метода мерења електроокулографског сигнала на интервалу са преклапањем временских прозора." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2018. https://www.cris.uns.ac.rs/record.jsf?recordId=106024&source=NDLTD&language=en.
Full textU tezi je predložena metoda merenja EOG signala na intervalu sapreklapanjem vremenskih prozora, koja predstavlja modifikacijudigitalne stohastičke metode merenja (DSMM). Hardver kojim sepredložena metoda može implementirati zasnovan je na računarskojplatformi i mikrokontrolerskoj strukturi. Metoda je ispitana brojnimsimulacijama i eksperimentima. Hipoteza ove teze – da model merenjaEOG signala na intervalu sa preklapanjem vremenskih prozoraomogućava projektovanje EOG mernog uređaja koji je otporniji na uticajšuma nego EOG merni uređaji zasnovani na klasičnom digitalnommerenju – potpuno je potvrđena.
EOG signal measurement method over an interval using overlapping timewindows, which represents the modification of the digital stochasticmeasurement method (DSMM), has been proposed in this thesis. Thehardware that can implement the proposed method is based on a computerplatform and a microcontroller structure. The method has been tested withnumerous simulations and experiments. Hypothesis of this thesis - the modelof EOG signal measurement over an interval using overlapping time windowsallows a design of EOG measuring device more resistant to the noise impactthan the EOG measuring devices based on classical digital measurement -has been fully confirmed.
Ziani, Abdellatif. "Etude et réalisation d'un système d'analyse automatique du sommeil." Rouen, 1989. http://www.theses.fr/1989ROUES028.
Full textEl, Sanwar Khaled. "Contribution à la mise en oeuvre d'un dispositif d'assistance aux handicapés moteurs par commande oculaire pour la navigation dans un monde virtuel 3 D." Valenciennes, 2003. http://ged.univ-valenciennes.fr/nuxeo/site/esupversions/7cd1c17e-ba46-440a-ae42-7c263a7415fa.
Full textThis thesis presents the implementation of an assistance device dedicated to physically handicapped in order to provide access to virtual environments. Our method consists on software adaptation of an ocular control device to make it usable for a 3D navigation task in a virtual world. This ocular control device called Cyclope uses electrooculographic technology. It measures horizontal and vertical eye movements. A graphical user interface containing three navigation menus is used to transform 2D eye movements into 3D rotations and translations. An experimental protocol is used to study the use of the ocular control device for 3D navigation following an objective aspect i. E. Error rate as well as following a subjective aspect regarding tiredness and ease of use. Experiments accomplished with non disabled subjects and one handicapped subject led to the validation of using Cyclope in a 3D navigation task and to the identification of main causes of errors encountered during experimentations
Hooshidar, Daniel, and Yobart Amino. "Implementation av portabla REM-identifierande sensorer : Undersökning kring lämpliga, icke-påträngande metoder för REM-igenkänning." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-232117.
Full textTiredness in traffic is a major problem in society. It is especially dangerous to drive heavy trucks when tired because these vehicles are large and often have vital roles when involved in traffic accidents. To address the problem, this degree project has studied which sleep stage is most appropriate to wake up during, in order to wake up sharp and alert, and what types of techniques and methods are suitable for portable detection of Rapid-Eye-Movement. Previous work and studies have been done which indicates that awakening during REM sleep is optimal for feeling alert. The chosen methods are based on variants of well-established techniques that are used to identify sleep stages. Electrooculography is used to measure eye movements using four electrodes placed on the head. Body movements are detected by an accelerometer attached to the arm. Pulse measurements are made and used to calculate the pulse variation during sleep. The goal is to create a prototype which will know when the user is in REM sleep and then wake the user up. This work is divided into two embedded systems that are made between two different degree projects. The result was three sensors that worked individually. Due to lack of time and a longer troubleshooting, the prototype was not completed. Before the sensors can be used in a product, additional tests are required under the supervision of a sleep specialist.
Delannoy, Julien. "Émotions et sommeil : effets d’une induction émotionnelle diurne sur le sommeil et la réactivité émotionnelle au réveil." Thesis, Lille 2, 2016. http://www.theses.fr/2016LIL2S005/document.
Full textSleep constitutes a major component of adaptation and survival in evolved organisms. In humans, sleep could have a role in the integration of daytime experiences, preparing by this way individuals for consecutive wake period. Due to the adaptive relevance of emotions, it has recently been proposed that pre-hypnic emotions could influence the sleep course, which could modulate emotional reactivity at awakening. However, the bi-directional link between emotion and sleep remains unclear, this being explained by the complexity of such link and by the difficulty of reconciling the diversity of methodological approaches. In this context, the aim of this thesis was twofold: first, determine the impact of induced daytime emotional states on sleep characteristics; second, assess the influence of these states on the emotional reactivity at the awakening.The experimental program led to the presentation of three types of emotional movies, negative, neutral or positive, in order to induce a diurnal emotional state, in French or Japanese participants. Two experiments were carried out: one tested the impact of the emotional movies on the individual emotional states; the other determined the influence of pre-hypnic induced emotional states on sleep parameters and responsiveness to emotional facial expressions, presented to the participant at the subsequent awakening.These experiments allowed to obtain several new results. Firstly, it was shown that emotional movies induced congruent emotional states during the pre-hypnic period. Secondly, these pre-hypnic emotional states influenced the distribution of sleep stages and associated autonomic activity during the consecutive night of sleep. Thirdly, we observed that the pre-hypnic emotional induction modulated the emotional reactivity after the sleep period, during the presentation of faces expressing emotions at different intensities. The interpretation of main results can lead to the speculation that the increase of time spent in REM (Rapid Eye Movement) stage, following the pre-hypnic emotional stimulations, can be a marker of central processes related to daytime emotional experiences. Based on this assumption, such processes could be a required mediator for emotional reactivity changes observed upon awakening.In conclusion, researches presented in this thesis, subtended by a new and standardized methodology of emotional induction, provide original information about the bi-directional links between diurnal emotions and sleep course. Subject to additional experimentations, this work brings new questions about the role of emotions, particularly positive ones, on sleep and subsequent emotional states. From a prospective point of view, reported data reinforces the idea that considers the sleep as an efficient lever to regulate emotions
Jiang, Wei-Ling, and 江偉凌. "Design of eye movement detection system based on electrooculography signals and their human-computer interaction applications." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/35340531493212140290.
Full text國立交通大學
影像與生醫光電研究所
100
In assistive research area, human-computer interface (HCI) technology is used to help disable people by conveying their intention and thinking to the outside world. Many HCI systems based on eye movement have been proposed to assistive disable people. However, due to the complexity of algorithm and difficulty of hardware implementation, there are rare general purpose designs considering the practicality and stability in real-life. Therefore, to solve these limitations and problems, a HCI system based on electrooculography (EOG) is proposed in this study. The proposed classification algorithm provides the eye state detection including fixation, saccade and blink. Moreover, in saccade detection, this algorithm can distinguish ten kind of saccade movements (i.e., up, down, left, right, much left, much right, up-left, down-left, up-right and down-right). In addition, we development a HCI system based on eye movement classification algorithm. This system provides an eye-dialing interface that can be facilitated to improve the life of disable people. The significant results are achieved that proved the performance of the proposed classification algorithm. Moreover, the EOG-based system, which can detect ten different eye movement features, is potential to be performed in real-life applications.
Garcia, Diogo Joao Machado. "Modelação de expressões faciais num avatar usando classificação de biossinais." Master's thesis, 2014. http://hdl.handle.net/10316/40453.
Full textO reconhecimento do estado afetivo ou emocional dos humanos, pelas máquinas, assunto que se explora já há muito tempo, pretende melhorar a interação entre máquinas/computadores e humanos, adaptando-se a diferentes situações. As expressões faciais são uma das formas que permite a inferência de estados emocionais. Existem várias técnicas de reconhecimento automático de expressões faciais, que passam por técnicas baseadas em processamento de imagem ou vídeo e por utilização de biossinais, mais especificamente sinais eletromiográficos. Nesta tese, foi investigada a utilização de biossinais, nomeadamente sinais eletromiográficos e sinais eletro-oculográficos, para inferir expressões faciais e movimentos oculares. Os músculos faciais permitem detetar expressões, tais como “felicidade”, “tristeza”, “surpresa”, “raiva”, entre outras. A informação do olhar é também relevante, tanto para a criação de novas interfaces de interação homem-máquina como para a dedução de estados emocionais e sociais. Informações como: olhar para cima, olhar para baixo, desviar o olhar são úteis para este fim. Existem várias técnicas de seguimento ocular e também de deteção de piscar de olhos, nomeadamente as que se baseiam no processamento de imagem, na oculografia de infravermelhos, na técnica da bobina escleral e nos biossinais eletro-oculográficos. A fim de mimetizar as expressões faciais efetuadas pelo utilizador, bem como movimentos oculares e movimentos da cabeça (através de um sensor de inércia) foi desenvolvido um avatar 3D. O sistema de deteção incorpora três subsistemas; o primeiro deteta entre quatro expressões faciais (neutra, felicidade, tristeza e raiva), o segundo sistema deteta entre cinco movimentos oculares (“cima”, “baixo”, “direita”, “esquerda” e “piscar de olhos”) e o movimento de “franzir”. Ainda foi desenvolvido um terceiro sistema de seguimento ocular de movimentos horizontais (eye-tracking) recorrendo também a sinais eletrooculográficos. Os dois primeiros sistemas recorrem a um classificador discriminativo linear (classificador de Bayes). Todos estes sistemas foram implementados para funcionamento online. O sistema de reconhecimento de expressões faciais obteve desempenho bastante satisfatório, com uma média de exatidão, entre expressões, de 95,5%, sendo a expressão “tristeza” algumas vezes confundida pelo classificador com a expressão ”raiva” (algo que se refletiu no desempenho global do sistema).Nos testes efetuados, o sistema de reconhecimento de movimentos oculares obteve uma taxa de sensibilidade de 84,7% e um taxa de exatidão de 98,3%. O sistema de seguimento ocular, que foi desenvolvido, apresentou um ótimo desempenho, no seguimento de treze sacadas, e um erro de aproximadamente 3,0 graus na posição final.
The recognition of the human affective and emotional state by machines is a subject that has been researched for a long time. This allows for better and more suitable interaction between machines/computers and humans. Facial expressions are one of the ways that allows the inference of emotional states. Various techniques are available to automate facial expressions recognition, ranging from techniques based on the image and video processing to the use of biosignals, more precisely electromyographic signals. In this thesis, the use of biosignals, in particular electromyographic signals and electrooculographic signals, was researched to deduce facial expressions and eye movements. The facial muscles allow the detection of expressions such as “happiness”, “sadness”, “surprise”, “anger”, among other expressions. Eye information is also relevant, not only for the creation of new humanmachine interfaces, but also for depicting social and emotional states. Look in up, look in down or look away are useful information for this purpose. There are several techniques for eye tracking and detecting blinks of the eye: based on image processing, infrared oculography, scleral coil and based on electrooculographic biosignals. In order to mimic the user facial expressions, as well as eye tracking and head movements (through a motion sensor), a 3D avatar was developed. The main detecting system incorporates three subsystems. The first subsystem detects four facial expressions (neutral, happiness, sadness and anger), the second subsystem detects five eye movements (up, down, right, left and blink of the eye) and frown movement. The third subsystem is an eye-tracking system that also uses electrooculographic signals. The first two subsystems use a linear discriminative classifier (Bayes classifier). All these subsystems were developed for online usage. The facial expressions recognition system had a positive performance, with an average accuracy of 95,5%, where the sad expression was sometimes confused with anger expression (that affected the system global performance). In the tests carried out, the eye-movement recognition system had a sensitivity of 84,7% and accuracy of 98,3%. The developed eye-tracking system showed great performance when following 13 saccades, and a final position error of approximately 3,0 degrees.