Processing of EEG signals for study of coupling in brain regions for eyes open and eyes closed conditions

TitleProcessing of EEG signals for study of coupling in brain regions for eyes open and eyes closed conditions
Publication TypeConference Proceedings
Year of Conference2014
AuthorsBose D, Ajeesh TP, Narayana DD, Tripathi S.
Conference NameInternational Conference on Advances in Computing, Communications and Informatics
Pagination327-331
PublisherIEEE
ISBN Number1479930784
KeywordsDept. of Electronics and communication Engineering.
Abstract

This paper deals with processing the EEG signals obtained from 16 spatially arranged electrodes to measure coupling or synchrony between the frontal, parietal, occipital and temporal lobes of the cerebrum under the eyes open and eyes closed conditions. This synchrony was measured using magnitude squared coherence, Short Time Fourier Transform and wavelet based coherences. We found a pattern in the time-frequency coherence as we moved from the nasion to the inion of the subject's head. The coherence pattern obtained from the wavelet approach was found to be far more capable of picking up peaks in coherence with respect to frequency when compared to the regular Fourier based coherence. We detected high synchrony between frontal polar electrodes that is missing in coherence plots between other electrode pairs. The study has potential applications in healthcare.