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Titolo:
INVERSE-DYNAMICS MODEL EYE-MOVEMENT CONTROL BY PURKINJE-CELLS IN THE CEREBELLUM
Autore:
SHIDARA M; KAWANO K; GOMI H; KAWATO M;
Indirizzi:
ELECTROTECH LAB,NEUROSCI SECT,1-1-4 UMEZONO TSUKUBA IBARAKI 305 JAPAN ATR,HUMAN INFORMAT PROC RES LAB KYOTO 61902 JAPAN HOKKAIDO UNIV,ELECTR SCI RES INST,PARALLEL DISTRIBUTED PROC LAB SAPPORO HOKKAIDO 060 JAPAN
Titolo Testata:
Nature
fascicolo: 6441, volume: 365, anno: 1993,
pagine: 50 - 52
SICI:
0028-0836(1993)365:6441<50:IMECBP>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
OCULAR FOLLOWING RESPONSES; VESTIBULOOCULAR REFLEX; PRIMATE FLOCCULUS; ALERT MONKEY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
21
Recensione:
Indirizzi per estratti:
Citazione:
M. Shidara et al., "INVERSE-DYNAMICS MODEL EYE-MOVEMENT CONTROL BY PURKINJE-CELLS IN THE CEREBELLUM", Nature, 365(6441), 1993, pp. 50-52

Abstract

MANY lines of evidence suggest that the cerebellum is involved in motor control1. But what features of these movements are encoded by cerebellar neurons? For slow-tracking eye movements, the activity of Purkinje cells in the ventral paraflocculus of the cerebellum is known to becorrelated with eye velocity2-5 and acceleration5. Here we show that the complex temporal pattern of the firing frequency that occurs during the ocular following response elicited by movements of a large visual scene6-8 can be reconstructed by an inverse-dynamics representation,which uses the position, velocity and acceleration of eye movements. Further analysis reveals that the velocity and acceleration componentscan provide appropriate dynamic drive signals to ocular motor neurons, whereas the position component often has the wrong polarity. We conclude that these Purkinje cells primarily contribute dynamic command signals.

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Documento generato il 09/04/20 alle ore 20:12:38