May 1, 1977

Interrelationship between spatial synchronization and rhythmic components of the human EEG

Zhurnal vyssheĭ nervnoĭ deiatelnosti imeni I P Pavlova
N E Sviderskaia

Abstract

The main object of the work was to elucidate the functional significance of different human EEG rhythms. Cross-correlation and spectral characteristics at the background and during mental work were studied in thirteen subjects by recording from four points of the left hemisphere. During intellectual load, spatial synchronization is enhanced between the biopotentials of most areas: interrelations between remote points are intensified which leads to the smoothing of the synchronization gradient existing in a state of rest. The alpha-rhythm becomes less pronounced everywhere in parallel to the decrease in synchronism of its fluctuations in different zones; at the same time low-frequency activity (delta-theta) increases both by the amplitude of oscillations and the capacity for its unidirectional shifts over the whole cortex. The least distinct change is observed in the beta-rhythm.

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Mentioned in this Paper

Fluctuation
Cortex Bone Disorders
Adrenal Cortex Diseases
Brain
Cortical Synchronization
Cortex of Organ
Cerebral Cortex
Oculocerebral Hypopigmentation Syndrome Type Preus
Bark - plant part
Electroencephalogram

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