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Titolo:
The effect of disparity on the very earliest ocular following responses and the initial neuronal activity in monkey cortical area MST
Autore:
Takemura, A; Inoue, Y; Kawano, K;
Indirizzi:
Electrotech Lab, Neurosci Sect, Tsukuba, Ibaraki 3058568, Japan Electrotech Lab Tsukuba Ibaraki Japan 3058568 uba, Ibaraki 3058568, Japan JST, CREST, Ibaraki, Osaka, Japan JST Ibaraki Osaka JapanJST, CREST, Ibaraki, Osaka, Japan Natl Inst Physiol Sci, Aichi 4448585, Japan Natl Inst Physiol Sci Aichi Japan 4448585 siol Sci, Aichi 4448585, Japan
Titolo Testata:
NEUROSCIENCE RESEARCH
fascicolo: 1, volume: 38, anno: 2000,
pagine: 93 - 101
SICI:
0168-0102(200009)38:1<93:TEODOT>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
VIEWING DISTANCE; NEURAL ACTIVITY; RHESUS-MONKEY; ALERT MONKEY; SENSITIVITY; DEPENDENCE; MOTION; CORTEX; VERGENCE;
Keywords:
ocular following response; binocular disparity; monkey; MST area; extrastriate visual cortex; eye movement; vision; ocular tracking;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Takemura, A Electrotech Lab, Neurosci Sect, 1-1-4 Umezono, Tsukuba, Ibaraki 3058568, Japan Electrotech Lab 1-1-4 Umezono Tsukuba Ibaraki Japan 3058568 an
Citazione:
A. Takemura et al., "The effect of disparity on the very earliest ocular following responses and the initial neuronal activity in monkey cortical area MST", NEUROSCI RE, 38(1), 2000, pp. 93-101

Abstract

Movement of the Visual scene evokes tracking movement with the eyes (ocular following response, OFR) at short latency (Miles, F.A.. Kawano, K., Optican, L.M., 1986. Short-latency ocular following responses of monkey. I. Dependence on temporospatial propel ties of visual input. J. Neurophysiol. 56, 1321-1354). We examined the effect of binocular disparity on the initial OFR. The dependence of the OFR on horizontal disparity steps was studied in three monkeys (Macaca fuscata), and the associated unit discharges in the medial superior temporal area (MST) a;ere studied in two of these. Based on the changes in eye position over the period 50-83 ms (measured from stimulusonset), the initial OFR showed clear dependence on the disparity imposed during the preceding centering saccade. The disparity tuning curves were S-shaped with a peak at a small crossed disparity and a trough at uncrossed disparities. Based on the changes in discharge rate over the period 40-73 ms (measured from stimulus onset), almost all OFR-related MST neurons (80/83 96.4%) showed significant dependence on the disparity step (Student's t-test, P < 0.05). The early neuronal responses of the majority of units (41/75, 55%) had disparity tuning curves resembling those for the OFR, which peakedat small crossed disparities. These findings suggest that the neurons in the MST contain information on binocular disparity in their short-latency discharges, and are involved in the neural basis of the OFR's dependence on horizontal disparity. (C) 2000 Elsevier Science Ireland Ltd and Japan Neuroscience Society. All rights reserved.

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Documento generato il 25/01/20 alle ore 19:32:55