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Titolo:
EVIDENCE FOR A FACILITATORY ROLE OF CALLOSAL AFFERENTS TO THE CAT MOTOR CORTEX IN THE INITIATION OF CONDITIONED BILATERAL MOVEMENTS
Autore:
SPIDALIERI G; GUANDALINI P; FRANCHI G;
Indirizzi:
UNIV FERRARA,INST HUMAN PHYSIOL,VIA FOSSATO MORTARA 17-19 I-44100 FERRARA ITALY
Titolo Testata:
Experimental Brain Research
fascicolo: 1, volume: 108, anno: 1996,
pagine: 185 - 190
SICI:
0014-4819(1996)108:1<185:EFAFRO>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
NICTITATING-MEMBRANE RESPONSE; CORONAL-PERICRUCIATE CORTEX; CORPUS-CALLOSUM; ROSTRAL PORTION; CEREBELLAR NUCLEI; RHESUS-MONKEY; UNIT ACTIVITY; CONNECTIONS; LESIONS; MICROSTIMULATION;
Keywords:
CORPUS CALLOSUM; SPLIT BRAIN; BILATERAL BLINKING; CAT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
33
Recensione:
Indirizzi per estratti:
Citazione:
G. Spidalieri et al., "EVIDENCE FOR A FACILITATORY ROLE OF CALLOSAL AFFERENTS TO THE CAT MOTOR CORTEX IN THE INITIATION OF CONDITIONED BILATERAL MOVEMENTS", Experimental Brain Research, 108(1), 1996, pp. 185-190

Abstract

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 catstrained to blink in response to a 500-ms tone. A 100-ms air-puff delivered to one eye only (ipsi lateral 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 percentageof 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 hemi spheres influence each other in controlling conditioned bilateral blinking by reciprocally exchanging facilitatory signals contributing to initiation of CRs in both eyes.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 20:25:33