Abstract
Evoked unit activity was investigated bilaterally in neurons of the Clare-Bishop area in cat brain after unilateral severing of the posterior limb of the internal capsule. Cell responses to photic, acoustic, and somatosensory stimuli, also to electrical stimulation of the association areas of the neocortex were investigated. The most rudimentary type of response to a diffuse light flash, electrical stimulation of the forepaw skin, and acoustic stimulation was restored in a proportion of test cells in the operated hemisphere within one week of operating. Sensitivity to visual stimuli increased considerably in cells of the Clare-Bishop area of the intact hemisphere during the first week after the operation. All test cells responded to presentation of light flashes; 80% had receptive fields located to electrical stimulation of the forepaw skin. Seven days after the operation the number of cells responding to photic stimulation fell to 35% and only 17% of cells responded to somatosensory stimuli. This article discusses features of the neuronal compensatory reorganization of the Clare-Bishop area and its role in the recovery of visual function.
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Institute of Experimental Medicine, Academy of Medical Sciences of the USSR, Leningrad. Translated from Neirofiziologiya, Vol. 18, No. 2, pp. 180–187, March–April, 1986.
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Silakov, V.L., Senatorov, V.V. Changes in the functional characteristics of Clare-Bishop area cells after partial unilateral isolation of the neocortex in cats. Neurophysiology 18, 130–135 (1986). https://doi.org/10.1007/BF01052359
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DOI: https://doi.org/10.1007/BF01052359