Geometrical Patterns of Coherence Interactions of Biopotentials in Different EEG Frequency Ranges during Goal-Directed Behavior in Humans

摘要

The spatial organization of biopotentials in the theta, alpha, betal, and beta2 EEG ranges was studied in subjects who quickly and accurately performed a task consisting of memorizing and reproducing a defined sequence of circles on a computer monitor screen. Geometrical patterns of coherence interactions of biopotentials in the theta, alpha, betal, and beta2 EEG ranges changed dynamically at different stages of goal- directed activity in the subjects. These studies provide grounds for regarding the dynamically changing geometrical patterns of coherence relationships of biopotentials in different EEG frequency ranges as an objective indicator of the projection of intracerebral processes of the systems architecture of goal-directed behavioral activity onto the cerebral cortex.