Functional organization of the cortex of the large hemispheres during voluntary movement performance: Age aspect |
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Authors: | D A Farber I O Anisimova |
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Institution: | (1) Institute of Developmental Physiology, Russian Academy of Education, Moscow |
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Abstract: | The method of estimation of the coherence (Coh) function values of EEG rhythmic components disclosed the specific features
of functional associations of cortical regions during the performance of voluntary graphic cyclic movements under usual and
unusual conditions. A significant increase in the Coh function values of the α-rhythm was observed both in the contralateral
hemisphere and the symmetrical central and parietal cortical regions in adult subjects during right-hand movement performance
with open eyes (usual conditions); in this case the resulting functional associations included motor zone and cortical regions
responsible for visual information analysis and perception. During right- and left-hand movement performance with closed eyes
(unusual conditions), the mature-type functional organization had a bilateral character with interrelated activity focused
in the frontal regions that clearly demonstrated the function of these structures during formation of new motor programs.
The significant changes in cortical mechanisms of voluntary graphic movements were disclosed in young 7- to 8- and 9- to 10-year-old
schoolchildren. |
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Keywords: | |
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