Abstract

The coherence analysis is based on spectral analysis, which describe the synchronization of electroencephalogram (EEG) rhythms between brain areas. Coherence analysis is a non-invasive technique for studying functional relationships between brain regions. The coherence analysis is a kind of study based on spectrum analysis, which can describe the coordination of the brain electric activities of different frequencies between brain areas. Aimed at the coherence analysis of EEG signal between brain areas using an activity Stroop Task. Power spectral density (PSD) has been used for the analysis of event related coordination of neurophysiological signals of neural responses for a particular task which the subject repetitively performs. The Welch method is used to study the PSD. we constructed simulated EEG data, looked for the suitable approach for cognitive EEG and tried to apply it to the EEG data from Stroop Tack. The result shows coherency of EEG signal of the brain areas for Stroop task activity.

References

• A book by Steven Pinker"How the Mind Works".
• Robert W. Thatcher, Ph. D. , Carl J. Biver, Ph. D. and Duane M. North, MA. "EEG and Brain Connectivity: A Tutorial"2009.
• H. Petsche and S. C. Etlinger "EEG and Thinking" Verlag der OAW. Wien 1998.
• Valer Jurcak, Daisuke Tsuzuki, and Ippeita Dan"10/20, 10/10, and 10/5 systems revisited: Their validity as relative head-surface-based positioning systems. "(2007).
• B. Schack, G. Seide, W. awe, F. Heinrich, U. Krause "Coherence Analysis Of The Ongoing EEG By Means Of Microstates Of Synchronous Oscillations",IEEE(2001).
• Xiaotong Wen, Kai Yin, Dongzhi Sun, Li Yao1, Xiaojie Zhao, "Application of Time-varying Coherence to Coordinative Connectivity Based on Event RelatedEEG". IEEE 2007.
• C. Andrew, and G. Pfurtscheller, "Event-related coherence as a tool for studying dynamic interaction of brain regions", Electroencephalography and clinical Neurophysiology, vol. 98, 1996, pp. 144-148.
• B. Schack, G. Grieszbach and W. Krause 'The sensitivity of instantaneous coherence for considering elmentary comparison processing. Part 1. " Int. J. Psychophysiol. 31, pp. 219-240, 1999
• Xiaofeng Liu, Huan Qi, SupinWang, MingxiWan"Wavelet-based estimation of EEG coherence during Chinese Stroop task"Computers in Biology and Medicine 36 (2006).
• B. Schack, A. C. N. Chen, S. Mescha and H. Witte "Instantaneous EEG Coherence Analysis during the Stroop Task," Clin. Neuropliysiol. 1 10, pp. 14 10-1426, 1999
• D. L. Peng, T. M. Guo, J. H. Wei, and L. H. Xiao, "An ERP Study on Processing Stages of Children's Stroop Effect", Science Technology and Engineering ,vol. 4, 2004, pp. 84-88.
• X. Wen, X. Zhao, and L. Yao, "Time-Frequency analysis of EEG based on event related cognitive task", Lecture Notes in Computer Science, vol. 3973 , 2006, pp. 579- 585.
• Simon Brean, Veronika Rutar, Vito Logar, Bla Koritnik, Gregorij Kurillo, Ale Beli, Janez Zidar"Electroencephalographic (EEG) Coherence Between Visual And Motor Areas Of The Left And The Right Brain Hemisphere While Performing Visuomotor Task With The Right And The Left Hand"(2007).
• Bahar Guntekin , Erol Basar"A new interpretation of P300 responses upon analysis of coherences"(2010).
• Adey, W. R. , Walter, D. O. and Hendrix, C. E. Computer techniques in correlation and spectral analyses of cerebral slow waves during discriminative behavior. Exp Neurol. 1961, 3:501-24.
• Bendat, J. S. & Piersol, A. G. (1980). Engineering applications of correlation and spectral analysis. New York: John Wiley & Sons.
• B. Schack, G. Grieszbach, H. Nowak, and W. Krause,"The sensitivity of instantaneous coherence for considering elementary comparison processing. Part II: similarities anddifferences between EEG and MEG coherences",International Journal of Psychophysiology, vol. 31, 1999, pp. 241-259.
• L. Shalev, and D. Algom, "Stroop and Garner effects in and out of Posner' s beam: reconciling two conceptions of selective attention", Journal of Expermental psychology: Human Perception and Performance, vol. 26, 2000, pp. 997-1017.
• B. Schack and W. Krause, "Instantaneous coherence as a sensible parameter for considering human information processing," Proc . lEEE Int. Can! Partern Recognition, pp. 45-49. 1996.