Evidence for a facilitatory role of callosal afferents to the cat motor cortex in the initiation of conditioned bilateral movements.

Evidence for a facilitatory role of callosal afferents to the cat motor cortex in the initiation of conditioned bilateral movements. Research Abstract Details 

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Evidence for a facilitatory role of callosal afferents to the cat motor cortex in the initiation of conditioned bilateral movements. Abstract Text:

G Spidalieri,P Guandalini,G Franchi,

The effects of selective transection of the rostralmost portion of the corpus callosum, which contains fibres interconnecting the motor cortices of the two hemispheres, on frequency of occurrence and latency of conditioned responses (CRs) in both eyes were examined in seven cats trained to blink in response to a 500-ms tone. A 100-ms air-puff delivered to one eye only (ipsilateral eye) 400 ms after tone onset was used as an unconditioned stimulus. Both before and after callosal lesion, bilateral CRs were the most frequent response pattern. Following callosal lesion, a statistically significant reduction in the percentage of CRs in at least one eye was observed in only two cats. In all seven animals, both before and after callosal lesion, the mean CR latencies of the ipsilateral eye were significantly shorter than those of the contralateral eye. Callosal lesion caused a significant increase in the mean CR latencies of both eyes in all subjects. These results provide evidence that the two hemispheres influence each other in controlling conditioned bilateral blinking by reciprocally exchanging facilitatory signals contributing to initiation of CRs in both eyes.

Evidence for a facilitatory role of callosal afferents to the cat motor cortex in the initiation of conditioned bilateral movements. Publishing Authors By Initials

G Spidalieri,P Guandalini,G Franchi,

For similar reaction time research abstracts see: reaction time research

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Evidence for a facilitatory role of callosal afferents to the cat motor cortex in the initiation of conditioned bilateral movements. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Experimental brain research. Experimentelle Hirnfo

VOLUME: 108

Page Numbers: 185-90

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ISSN: 0014-4819

DAY: 15

MONTH: Feb

YEAR: 1996

Evidence for a facilitatory role of callosal afferents to the cat motor cortex in the initiation of conditioned bilateral movements. Information

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LANGUAGE: eng

NlmUniqueID: 43312

Evidence for a facilitatory role of callosal afferents to the cat motor cortex in the initiation of conditioned bilateral movements. Keywords Mesh Terms:

KEYWORDS: Reaction Time

MESH TERMS: physiology

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Grant and Affiliation Information for Evidence for a facilitatory role of callosal afferents to the cat motor cortex in the initiation of conditioned bilateral movements.

AFFILIATION: Institute of Human Physiology, University of Ferrara, Italy.

Country: GERMANY

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MEDLINETA: Exp Brain Res

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