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Titolo:
Joint-encoding of motion and depth by visual cortical neurons: neural basis of the Pulfrich effect
Autore:
Anzai, A; Ohzawa, I; Freeman, RD;
Indirizzi:
Univ Calif Berkeley, Sch Optometry, Grp Vis Sci, Berkeley, CA 94720 USA Univ Calif Berkeley Berkeley CA USA 94720 Vis Sci, Berkeley, CA 94720 USA
Titolo Testata:
NATURE NEUROSCIENCE
fascicolo: 5, volume: 4, anno: 2001,
pagine: 513 - 518
SICI:
1097-6256(200105)4:5<513:JOMADB>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
CATS STRIATE CORTEX; COMPLEX CELLS; STEREOSCOPIC DEPTH; RECEPTIVE-FIELDS; APPARENT MOTION; BINOCULAR DELAY; MACAQUE MONKEY; PERCEPTION; ORGANIZATION; STEREOPSIS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
47
Recensione:
Indirizzi per estratti:
Indirizzo: Freeman, RD Washington Univ, Sch Med, Dept Anat & Neurobiol, St Louis, MO 63110 USA Washington Univ St Louis MO USA 63110 St Louis, MO 63110 USA
Citazione:
A. Anzai et al., "Joint-encoding of motion and depth by visual cortical neurons: neural basis of the Pulfrich effect", NAT NEUROSC, 4(5), 2001, pp. 513-518

Abstract

Motion and stereoscopic depth are fundamental parameters of the structuralanalysis of visual scenes. Because they are defined by a difference in object position, either over time or across the eyes, a common neural machinery may be used for encoding these attributes. To examine this idea, we analyzed responses of binocular complex cells in the cat striate cortex to stimuli of various intra- and interocular spatial and temporal shifts. We found that most neurons exhibit space-time-oriented response profiles in both monocular and binocular domains. This indicates that these neurons encode motion and depth jointly, and it explains phenomena such as the Pulfrich effect. We also found that the relationship between neuronal tuning of motion anddepth conforms to that predicted by the use of motion parallax as a depth cue. These results demonstrate a joint-encoding of motion and depth at an early cortical stage.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/01/20 alle ore 06:41:39