Abstract
High-frequency stimulation of the caudate nucleus evoked two types of rotatory movements of the head and trunk in freely moving cats: in the contralateral and ipsilateral directions. Contralateral rotations (CR) were evoked from a wider area, mainly from the dorso-medio-central zones of the head of the nucleus. Conversely, ipsilateral rotations were evoked from the ventrolateral zone, they more often contained a tonic component, their amplitude was greater, and their sensitivity to L-dopa and chlorpromazine was less. Unilateral injury to the region evoking CR led to ipsilateral asymmetry of posture. When this asymmetry disappeared, injection of L-dopa or apomorphine easily evoked circular movements in the same direction. Removal of zones acting as the source of ipsilateral responses gave the opposite result.
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Arushanyan, É.B., Dutov, A.A. Comparison of contralateral and ipsilateral rotatory responses to electrical stimulation of the caudate nucleus in cats. Bull Exp Biol Med 85, 132–135 (1978). https://doi.org/10.1007/BF00800103
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DOI: https://doi.org/10.1007/BF00800103