A central performance drop with luminance stimuli requiring spatial integration
نویسندگان
چکیده
منابع مشابه
Luminance and chromatic cues in a spatial integration task
These experiments explore the way in which cues provided by luminance and chromatic contrast interact in the spatial integration of elements. The stimuli were composed of bidimensional and isotropic Gauss functions. The elements were placed so that when experimentally manipulating the separations between the lines, subjects could generate an oriented percept from the elements sharing luminance ...
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Kehrer [Spatial Vision 2 (1987) 247] found that texture discrimination performance sometimes peaks in the parafovea rather than at the fovea, and he referred to this phenomenon as the central performance drop (CPD). Kehrer used a backward mask to limit performance and Morikawa [Vision Res. 40 (2000) 3517] argued that in some cases the temporal aspects of the backward mask may be critical to the...
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We recorded the responses of single macaque striate cortical cells to color-varying and luminance-varying patterns. We show that (a) the vast majority of primate striate cells respond to pure color stimuli, in addition to responding to luminance-varying stimuli (b) in general, simple cells are color-selective whereas complex cells respond to multiple color regions, (c) most cortical cells show ...
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Previous studies reported that performance in texture segmentation was lower near the fovea than in the periphery. However, the exact cause of this phenomenon had been unknown. Experiment 1 replicated the central performance drop (CPD). Experiments 2 and 3 demonstrated that the previously reported CPD was due to a temporal factor, i.e. slower neural processing in central vision, rather than a s...
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In this study, we consider how colour contrast can be used to integrate form and how it interacts with luminance contrast in the task. The performance of form integration was assessed by measuring the detection of a winding "contour" of aligned gabor elements embedded in a background of randomly oriented gabors, using both luminance and isoluminant (red/green) contrast. Performance on the task ...
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ژورنال
عنوان ژورنال: Perception & Psychophysics
سال: 2007
ISSN: 0031-5117,1532-5962
DOI: 10.3758/bf03193929