Chromatic selectivity of collinear facilitation
نویسندگان
چکیده
منابع مشابه
Chromatic collinear facilitation, further evidence for chromatic form perception.
Collinear facilitation of contrast detection of achromatic stimuli has been studied over the past decade by different groups. We measured collinear facilitation of chromatic contrast detection under equal-luminance (photometric quantity) and under isoluminance (minimum motion technique) conditions, as two different controls. The facilitation was tested for chromatic contrast detection of a fove...
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Normal aging has been shown to alter performance on several suprathreshold spatial tasks such as contour integration and perceptual measures of center-surround interactions. The purpose of this study was to investigate the effects of aging on collinear facilitation. Despite all related lateral interactions that are presumed to involve neural architecture within primary visual cortex, collinear ...
متن کاملCollinear facilitation in color vision.
The detection of a luminance-defined Gabor is improved by two high contrast, aligned, flanking Gabors, an effect termed collinear facilitation. We investigate whether this facilitation also occurs for isoluminant chromatic stimuli, and whether it can occur for chromatic targets with luminance flanks and vice versa. We measured collinear facilitation for Gabor stimuli (0.75 cpd, 1 octave bandwid...
متن کاملFacilitation from collinear flanks is cancelled by non-collinear flanks
Detection of a central Gabor pattern is facilitated by the presence of collinear flanking patterns. We find that this facilitation is greatly reduced when the collinear flanks are combined with non-collinear flanks to form a coherent surround. These results are unlikely to be explained by mechanisms that merely transduce local contrast in a nonlinear fashion. A model wherein the outputs of such...
متن کاملEffect of spatial frequency on collinear facilitation.
Contrast sensitivity for a Gabor target can be increased by a factor of two when identical patches are separated by about three wavelengths (lambda) and positioned collinearly (Polat and Sagi, 1993, 1994a, 1994b). The facilitation effect was found for a wide range of spatial frequencies but was tested with well-experienced observers. Since practice modifies the range of lateral interactions, in...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2019
ISSN: 1534-7362
DOI: 10.1167/19.8.93