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Electrophysiological data on the role of the cerebral cortex in the compensatory restoration of functions


, : Electrophysiological data on the role of the cerebral cortex in the compensatory restoration of functions. Fiziologicheskii Zhurnal SSSR Imeni I M Sechenova 71(1): 42-49

Intracortical rearrangement of functions in the process of the compensatory restoration of functions was studied in semichronical experiments [in cats] using the technique of recording focal potentials in the parietal associative and somatosensory cortex after unilateral extirpation of their symmetrical regions. The recording zones for the focal associative and somatosensory (projecting) potentials were found to extend following the complete intracortical rearrangement (8-10 mo. after the unilateral extirpation). An assumption based on changes in the time-amplitude characteristics of the parameters of focal potentials recorded on the surface and at various levels of the somatosensory cortex of the intact hemisphere was made. The positive wave of the focal surface response apparently is not the result of deep (inner) negative potentials. As to the associative focal responses, no reversion of them could be observed across the whole depth of the cortex.

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