Correlation of Alpha Activity between the Frontal and Occipital Cortex

Abstract

A method of modified coherence analysis was applied to the interpretation of EEG differences between the frontal and occipital cortex. This paper discusses a bidirectional communication model for the frontal and occipital cortex. Directed coherence method was used to analyze α activities over the scalp. The results show that both in the left and right hemisphere, slow waves in the α frequency band had high correlation in the frontal-occipital direction, and fast waves had high correlation in the occipital-frontal direction. It may suggest that the structure of information transmission is different for fast and slow waves of α rhythm. © 1992, PHYSIOLOGICAL SOCIETY OF JAPAN. All rights reserved.