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Titolo:
Long-distance interactions in Cyclopean vision
Autore:
Kohly, RP; Regan, D;
Indirizzi:
York Univ, Dept Psychol, N York, ON M3J 1P3, Canada York Univ N York ON Canada M3J 1P3 pt Psychol, N York, ON M3J 1P3, Canada York Univ, Dept Biol, N York, ON M3J 1P3, Canada York Univ N York ON Canada M3J 1P3 Dept Biol, N York, ON M3J 1P3, Canada
Titolo Testata:
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES
fascicolo: 1463, volume: 268, anno: 2001,
pagine: 213 - 219
SICI:
0962-8452(20010122)268:1463<213:LIICV>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPATIAL-FREQUENCY; ORIENTATION DISCRIMINATION; TUNED CHANNELS; VISUAL-CORTEX; ATTENTION; DISPARITY; MODEL;
Keywords:
stereopsis; Cyclopean vision; receptive fields; long-distance interactions; feature-based attention;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Regan, D York Univ, Dept Psychol, 4700 Keele St,BSB Room 375, N York, ON M3J 1P3, Canada York Univ 4700 Keele St,BSB Room 375 N York ON Canada M3J 1P3 ada
Citazione:
R.P. Kohly e D. Regan, "Long-distance interactions in Cyclopean vision", P ROY SOC B, 268(1463), 2001, pp. 213-219

Abstract

We report on evidence for selective long-distance interactions in Cyclopean binocular vision. When presented with a pair of Cyclopean test bars observers could discriminate trial-to-trial uncorrelated variations in the mean orientation, orientation difference, separation and mean location of the test bars while ignoring random variations in the orientation, width and location of a third bar placed between the two test bars. We propose that the human visual system contains Cyclopean long-distance comparators (i) that compare the outputs of two narrow receptive fields some distance apart while being insensitive to stimuli located between those receptive fields, and (ii) the outputs of which carry orthogonally labelled indicators of orientation difference, mean orientation, separation and mean location. In the evolutionary context, one role for the proposed mechanisms might be to encode information about the silhouettes of animals whose camouflage is broken by the binocular vision of predators.

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Documento generato il 01/04/20 alle ore 22:00:29