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SPL meeting September 2011

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Date 2011/09/22
Time 14h30
Location IEETA Amph.
Country Portugal

EVENT-RELATED BRAIN OSCILLATIONS: CONCEPTS, METHODOLOGY, AND APPLICATION TO COGNITIVE BRAIN RESEARCH

Yordan Hodzhev, Institute of Neurobiology, Bulgarian Academy of Sciences, Sofia, Bulgaria

The conceptual framework of event-related oscillations (EROs) will be demonstrated as a powerful tool for understanding the origin of scalp neuroelectric responses and their functional significance. The present talk is aimed to introduce this concept to the broad audience of researchers working in the field of biological signal processing. Further, a brief review of advanced methods for EEG oscillatory analysis in neurophysiological studies will be presented. Special emphasis will be paid to methods for analysis in the time, frequency and time-frequency domains. These include different approaches for signal improvement and signal extraction, spectral analyses by means of the classical Fourier and short-term Fourier transform, and the Wavelet transform as one of the most elaborated approaches for time-frequency decomposition. The presented methods will be supported by examples from own research. Implications for a theoretical and methodological development of the EEG oscillations framework will be also discussed.