[The visual cortex alpha-scanning: EEG and magnetic resonance tomography data].
Exact localization of equivalent current dipoles (ECD) was obtained by combining the EEG and the MRI mapping allowing to trace the ECG displacement over the cortex. The data obtained corroborate localization of the alpha-rhythm ECD in the Gyrus Calcarina: the human primary visual cortex. Successive shifts of the ECD over this area during generation of each alpha-wave, were revealed. The data are discussed in the light of the "scanning hypothesis" that predicted a certain functional meaning of the alpha-wave spreading for cortical processing of sensory information.
Shevelev
I A
IA
Institute of Higher Nervous Activity and Neurophysiology, Russian Acad. Sci., Russia, 117865, Moscow, Butlerov St., 5a.
Bark
E D
ED
Verkhliutov
V M
VM
D000328:Adult; D000513:Alpha Rhythm; D001931:Brain Mapping; D006801:Humans; D008279:Magnetic Resonance Imaging; D014793:Visual Cortex / Q000502:physiology*
al'fa-Skanirovanie zritel'noĭ kory: dannye EEG i magnitno-rezonansnoĭ tomografii.