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Titolo:
On the gap effect for saccades evoked by electrical microstimulation of frontal eye fields in monkeys
Autore:
Opris, I; Barborica, A; Ferrera, VP;
Indirizzi:
Columbia Univ, Ctr Neurobiol & Behav, New York, NY 10032 USA Columbia Univ New York NY USA 10032 obiol & Behav, New York, NY 10032 USA Columbia Univ, Dept Psychiat, New York, NY 10032 USA Columbia Univ New York NY USA 10032 Dept Psychiat, New York, NY 10032 USA Yale Univ, Sch Med, Neurobiol Sect, New Haven, CT 06520 USA Yale Univ NewHaven CT USA 06520 Neurobiol Sect, New Haven, CT 06520 USA
Titolo Testata:
EXPERIMENTAL BRAIN RESEARCH
fascicolo: 1, volume: 138, anno: 2001,
pagine: 1 - 7
SICI:
0014-4819(200105)138:1<1:OTGEFS>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
REACTION-TIMES; SUPERIOR COLLICULUS; NEURONAL-ACTIVITY; MOVEMENTS; STIMULATION; INITIATION; PRIMATES; PROBABILITY; VOLUNTARY; FIXATION;
Keywords:
monkey; frontal eye field; stimulation; gap effect; saccade;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Ferrera, VP Columbia Univ, Ctr Neurobiol & Behav, 722 W 168th St,PI Annex Room 729, New York, NY 10032 USA Columbia Univ 722 W 168th St,PI Annex Room729 New York NY USA 10032
Citazione:
I. Opris et al., "On the gap effect for saccades evoked by electrical microstimulation of frontal eye fields in monkeys", EXP BRAIN R, 138(1), 2001, pp. 1-7

Abstract

To investigate the mechanisms of fixation disengagement and saccade initiation, we electrically stimulated the macaque frontal eye fields (FEF) whilemonkeys performed a visual fixation task. We tested the effect of introducing a temporal gap between fixation target offset and the onset of the electrical stimulus. We found that the duration of the Sap had a pronounced effect on the probability of producing electrically evoked saccades at a givencurrent level. The highest probability was found for gaps of 200 ms duration. There were also effects of gap duration on saccade latency and amplitude for most of the stimulation sites. The increase in saccade probability may be associated with lower current thresholds for evoking saccades.

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Documento generato il 31/03/20 alle ore 10:24:26