Dissertation > Excellent graduate degree dissertation topics show

Methods Towards Synchronous Recording and Analysis of Eye Movements and Electroencephalograph

Author: GuoZuo
Tutor: GaoXiaoZuo
School: Tsinghua University
Course: Biomedical Engineering
Keywords: reaction time eye tracking pseudorandom-sequence-codedsynchronization ERP EOG
CLC: TP274
Type: Master's thesis
Year: 2012
Downloads: 190
Quote: 0
Read: Download Dissertation

Abstract


Eye tracking and electroencephalography (EEG) analysis have been widelyused in cognitive psychology research as tools of experimental measurements.Because of technical limitations of synchronous recording and analysis of EEGdata and eye movements (EMs), especially eye tracking based on videorecording, it is difficult to realize the synchronization. In this thesis, thesimultaneous recording and analysis of eye movements and EEG were studied.At the same time, a number of technologies were proposed and implemented.Based on the simultaneous analysis of EMs and EEG, saccadic movements werestudied on visual perception. The eye behavior as an indicator of cognitiveprocesses may help us to understand the mechanism of brain cognition.In order to synchronize EEG signals and video recordings, a method ofsynchronization employing pseudorandom-sequence-coded signals wasproposed. An eye tracker system comprised of a high-speed USB camera and anEEG amplifier was designed for the implementation of the method. Starburstalgorithm was applied to identify the pupil center and gaze points weredetermined by a2nd-order mapping from a calibration process. Thissynchronization method was utilized in a Steady-State Visual Evoked Potential(SSVEP) experiment. The accuracy of the synchronization was10ms when thecamera frame rate was100f/s.Eye-tracking technology as a means of human-computer interaction (HCI)and eye behavior measurement has been widely used in psychology andcognitive scientific research. Meanwhile brain-computer interface (BCI) basedon SSVEP is also a concerned method for disabled patients. Two kinds ofelectrophysiological signals, Electrooculography (EOG) and EEG, weresimultaneous analyzed with the eye tracker system. The screen coordinates ofthe target could be used as benchmark parameters for calibration of gaze pointtracking.After the study on the basis relation of eye movement behavior and EOGwaveform, two cognition experiments were designed to study the EMs as behavioral indicators of cognitive process. One was about the stochasticresonance effect in motion-onset visual evoked potential (m-VEP). Another wasusing anti-saccade task to study autonomy cognition. In both of two experiments,the EMs were the response to the visual stimulus. The differences such as that intime delays between EMs and keyboard response indicated that there might bemore than one pathway of visual perception or there might be different braindynamic networks of processing. The ERP signals are needed further analyzedas the number of subjects is not enough.

Related Dissertations

  1. Solid wood furniture design strategy for the ERP and indoor holistic solutions research,TS664
  2. The Brain Mechanism of Other Race Effect: an ERP Study,B842.1
  3. Differences in different populations compared proprioception and Brain Mechanisms,B845
  4. Men extroversion personality and sexual attitudes towards sex pictures Processing: Evidence from an ERP,B844.2
  5. DM Fine Chemical Company sales of ERP solutions designed,F426.7
  6. ERP-based Modeling and Design of Accounting,F232
  7. The Financial Process Reengineering of L University Based on ERP,F270.7
  8. Research and Design of Coal Sales ERP System,TP311.52
  9. QI tools funds management ERP application problems and countermeasures,F270.7
  10. Studies on the Optimized Strategy of ERP Project in Kunlun Corporation,F270.7
  11. An Event-Related Potentials Study for Conflict Monitoring in Attention Deficit Hyperactivity Disorder Children,R749.94
  12. Evaluation Indexes of Female Physical Aesthetics for Developing of Underwear Mannequin,TS941.17
  13. The Application Research of ERP in the Information- based Management of the Power Supply Business Enterprise,F426.61
  14. ERP User-friendly Design Research and Its System Development and Practice,TP311.52
  15. The Application Research of SAP ERP System in Financial Management and Control of SCHOOT Group,F270.7
  16. The Effect of Attention on the Process of Ebbinghaus Illusion,B842
  17. Design and Development of ERP Equipment Manage System of Benxi Iron and Steel Company,TP311.52
  18. Design and Implementation of ERP Production Management System in BXSteel Mining Equipment Plant,TP311.52
  19. ERP Systems for Small and Medium-Scale Automobile Manufacturing Research and Implementation,TP311.52
  20. The MES&ER Integrated System Application on P aper Mill,F426.83
  21. The Research on the Logistics Cost Control Based on the ERP System of SINOPEC (Shanghai) Asphalt Sales Branch Company,F270.7;F426.72

CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Data processing, data processing system
© 2012 www.DissertationTopic.Net  Mobile