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Titolo:
BILATERAL COUPLING IN LEARNED BLINKING - SIDE SUPERIORITY, SYNCHRONY AND TEMPORAL COORDINATION IN NORMAL CATS
Autore:
SPIDALIERI G; FRANCHI G; GUANDALINI P;
Indirizzi:
UNIV FERRARA,INST HUMAN PHYSIOL,VIA FOSSATO MORTARA 17-19 I-44100 FERRARA ITALY
Titolo Testata:
Brain research
fascicolo: 1-2, volume: 746, anno: 1997,
pagine: 34 - 42
SICI:
0006-8993(1997)746:1-2<34:BCILB->2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
CORONAL-PERICRUCIATE CORTEX; UNIT ACTIVITY; MOVEMENTS; MONKEY; MEMORY; KINEMATICS; ATTENTION; RABBITS; SYSTEM; BRAIN;
Keywords:
LEARNED BILATERAL BLINKING; BLINK ONSET; SIDE SUPERIORITY; BILATERAL COUPLING; TEMPORAL BILATERAL COORDINATION; CAT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
31
Recensione:
Indirizzi per estratti:
Citazione:
G. Spidalieri et al., "BILATERAL COUPLING IN LEARNED BLINKING - SIDE SUPERIORITY, SYNCHRONY AND TEMPORAL COORDINATION IN NORMAL CATS", Brain research, 746(1-2), 1997, pp. 34-42

Abstract

In order to study interocular temporal coupling in the initiation of learned symmetrical blinking, experiments were carried out on cats trained to blink in response to a 500-ms tone paired with 100-ms ah-puffsrandomly delivered to either eye (alternate airpuff; 6 animals) or simultaneously directed to both eyes (bilateral airpuff; 4 animals) 400 ms after tone onset. In spite of the fact that differences in conditioned response (CR) latencies of the right and left eye varied in a widerange between positive and negative values in all subjects, a statistically significant difference between the mean CR latencies of the twoeyes (further called side superiority) was found in 6 animals, of which 4 were trained by alternate airpuff and 2 by bilateral airpuff. Superiority of the right eye was found in 3 animals and the opposite was observed in the other 3. Analysis of the differences between CR latencies of the two eyes showed that side superiority was not due 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. The ability to give simultaneous CRs bythe two eyes was found inversely related to the mean CR latency per session and subject. Regression analysis showed that power equations best described these relationships. In all animals, the frequency distribution of simultaneous CRs paralleled the frequency distribution of all CRs. In spite of a considerable trial-by-trial variability in the temporal relationships between CR latencies of the two eyes, clear-cut linear correlations were found by plotting the mean CR latencies of theright and left eye per both session and subject. The results reviewedin this paper are best accounted for by suggesting that blink onset of the two eyes is independently controlled by two distinct command signals and is modulated by bilaterally-balanced and lateralized influences.

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Documento generato il 05/07/20 alle ore 07:34:11