منابع مشابه
Bilateral field advantage in visual crowding
Thirty randomly oriented T's were presented in a circle around fixation at an eccentricity of 11 degrees such that each T was crowded by its neighbors. Two locations within the same hemifield (unilateral condition) or one location in each hemifield (bilateral condition) were precued for subsequent probing. Observers were then asked to report the orientation of a target T at one of these locatio...
متن کاملVisual crowding
What is crowding? Crowding is the curious phenomenon in which objects that can be recognized when viewed in isolation are rendered unrecognizable in clutter. Crowding is ubiquitous when ‘seeing sidelong’, as Lettvin (1976) described peripheral vision. Figure 1A provides a simple illustration: when looking directly at the plus, the isolated letter N on the right is easily read, while the same le...
متن کاملAging and visual crowding.
OBJECTIVES The ability to perceive high spatial frequencies (i.e., fine detail) is impaired when contours are placed near the detail to be resolved (Bouma, H. [1970]. Interaction effects in parafoveal letter recognition. Nature, 226, 177-178. doi:10.1038/226177a0; Flom, M. C., Weymouth, F. W., & Kahneman, D. [1963]. Visual resolution and contour interaction. Journal of the Optical Society of Am...
متن کاملVisual crowding in V1.
In peripheral vision, objects in clutter are difficult to identify. The exact cause of this "crowding" effect is unclear. To perceive coherent shapes in clutter, the visual system must integrate certain local features across receptive fields while preventing others from being combined. It is believed that this selective feature integration-segmentation process is impaired in peripheral vision, ...
متن کاملIndividual differences in visual field shape modulate the effects of attention on the lower visual field advantage in crowding.
It has previously been reported that visual crowding of a target by flankers is stronger in the upper visual field than in the lower, and this finding has been attributed to greater attentional resolution in the lower hemifield (He, Cavanagh, & Intriligator, 1996). Here we show that the upper/lower asymmetry in visual crowding can be explained by natural variations in the borders of each indivi...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2014
ISSN: 1534-7362
DOI: 10.1167/14.10.771