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Titolo:
BILATERAL COUPLING IN LEARNED BLINKING - EFFECTS OF LESION AIMED AT CALLOSAL DISCONNECTION OF THE CAT MOTOR CORTEX
Autore:
SPIDALIERI G; FRANCHI G; GUANDALINI P;
Indirizzi:
UNIV FERRARA,DIPARTIMENTO SCI BIOMED & TERAPIE AVANZATE,SEZ FISIOL UMANA I-44100 FERRARA ITALY
Titolo Testata:
Brain research
fascicolo: 1-2, volume: 770, anno: 1997,
pagine: 30 - 36
SICI:
0006-8993(1997)770:1-2<30:BCILB->2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
NICTITATING-MEMBRANE RESPONSE; ROSTRAL PORTION; CORPUS-CALLOSUM; SELECTIVE ATTENTION; EYE-MOVEMENTS; COORDINATION; MEMORY; BRAIN; INITIATION; PATTERNS;
Keywords:
LEARNED BILATERAL BLINKING; BLINK ONSET; SIDE SUPERIORITY; BILATERAL COUPLING; TEMPORAL BILATERAL COORDINATION; CORPUS CALLOSUM; SPLIT-BRAIN; CAT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
38
Recensione:
Indirizzi per estratti:
Citazione:
G. Spidalieri et al., "BILATERAL COUPLING IN LEARNED BLINKING - EFFECTS OF LESION AIMED AT CALLOSAL DISCONNECTION OF THE CAT MOTOR CORTEX", Brain research, 770(1-2), 1997, pp. 30-36

Abstract

The effects of selective transection of the rostralmost portion of the corpus callosum, which contains fibers interconnecting the motor cortices of the two hemispheres, on interocular temporal coupling in the initiation of learned symmetrical blinking were examined in 5 cats trained to blink in response to a 500-ms tone paired with 100-ms airpuffsrandomly delivered to either eye (alternate airpuff; 3 animals) or simultaneously directed to both eyes (bilateral airpuff; 2 animals) 400 ms after tone onset. Lesioning had no effect on ability to respond, but did cause a significant increase in the mean conditioned response (CR) latencies of both eyes in all subjects. In the intact cats, a statistically significant difference between the mean CR latencies of the two eyes (hereafter called side superiority) was found in three animals, two of which exhibited superiority of the left eye. After lesioning,it was found that the right eye proved superior to the left eye in four subjects. Both before and after lesioning, side superiority was notdue to the ability of one eye to give CRs consistently shorter than those of the other eye, but it crucially depended on the higher proportion of trials in which the superior eye led. A linear correlation between CR latencies of the right and left eye was found in all animals both before and after lesioning. It is suggested that subsequent to lesioning aimed at callosal disconnection of the motor cortex, the effectson initiation of learned symmetrical blinking are the consequences ofwithdrawal of both bilaterally balanced modulatory influences to botheyes and lateralized modulatory influences to the left eye. (C) 1997 Elsevier Science B.V.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 10:24:03