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Titolo:
The superior colliculus encodes gaze commands in retinal coordinates
Autore:
Klier, EM; Wang, HY; Crawford, JD;
Indirizzi:
York Univ, CIHR Grp Act & Percept, Toronto, ON M3J 1P3, Canada York Univ Toronto ON Canada M3J 1P3 Percept, Toronto, ON M3J 1P3, Canada York Univ, York Ctr Vis Res, Toronto, ON M3J 1P3, Canada York Univ Toronto ON Canada M3J 1P3 Vis Res, Toronto, ON M3J 1P3, Canada York Univ, Dept Psychol, Toronto, ON M3J 1P3, Canada York Univ Toronto ONCanada M3J 1P3 Psychol, Toronto, ON M3J 1P3, Canada York Univ, Dept Biol, Toronto, ON M3J 1P3, Canada York Univ Toronto ON Canada M3J 1P3 ept Biol, Toronto, ON M3J 1P3, Canada York Univ, Dept Kinesiol & Hlth Sci, Toronto, ON M3J 1P3, Canada York Univ Toronto ON Canada M3J 1P3 Hlth Sci, Toronto, ON M3J 1P3, Canada
Titolo Testata:
NATURE NEUROSCIENCE
fascicolo: 6, volume: 4, anno: 2001,
pagine: 627 - 632
SICI:
1097-6256(200106)4:6<627:TSCEGC>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
SACCADIC EYE-MOVEMENTS; ALERT RHESUS-MONKEY; HEAD-FREE CAT; VISUAL SPACE; PARIETAL CORTEX; MOTOR MAP; STIMULATION; SHIFTS; NEURONS; PRIMATE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
40
Recensione:
Indirizzi per estratti:
Indirizzo: Crawford, JD York Univ, CIHR Grp Act & Percept, 4700 Keele St, Toronto, ONM3J 1P3, Canada York Univ 4700 Keele St Toronto ON Canada M3J 1P3 1P3, Canada
Citazione:
E.M. Klier et al., "The superior colliculus encodes gaze commands in retinal coordinates", NAT NEUROSC, 4(6), 2001, pp. 627-632

Abstract

The superior colliculus (SC) has a topographic map of visual space, but the spatial nature of its output command for orienting gaze shifts remains unclear. Here we show that the SC codes neither desired gaze displacement norgaze direction in space (as debated previously), but rather, desired gaze direction in retinal coordinates. Electrical micro-stimulation of the SC intwo head-free (nonimmobilized) monkeys evoked natural-looking, eye-head gaze shifts, with anterior sites producing small, fixed-vector movements and posterior sites producing larger, strongly converging movements. However, when correctly calculated in retinal coordinates, all of these trajectories became 'fixed-vector. ' Moreover, our data show that this eye-centered SC command is then further transformed, as a function of eye and head position, by downstream mechanisms into the head- and body-centered commands for coordinated eye-head gaze shifts.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/01/20 alle ore 11:42:56