Time-Frequency Coherence Analysis Of Alcoholic’s EEG

Abstract

This study investigates the changes in functional connectivity between different regions of the alcoholic’s brain. The functional connectivity was estimated using the electroencephalographic (EEG)-based coherence function. The coherence function was estimated using the wavelet transform. The wavelet-based coherence method showed comparatively significantly larger values of coherence for alcoholic subjects at frontal and occipital regions of the brain. These significantly larger coherence values were observed both at lower (4-13) Hz and higher frequency components (50-60) at optimal time and frequency resolutions. The results presented in this study are novel and will provide more insight into the neurophysiological mechanism of alcoholic effects on the human brain