منابع مشابه
Visual 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 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 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 کاملMacaque monkeys experience visual crowding.
In peripheral vision, objects that are easily discriminated on their own become less discriminable in the presence of surrounding clutter. This phenomenon is known as crowding.The neural mechanisms underlying crowding are not well understood. Better insight might come from single-neuron recording in nonhuman primates, provided they exhibit crowding; however, previous demonstrations of crowding ...
متن کاملNeural correlates of visual crowding
In visual crowding, target discrimination strongly deteriorates when flanking elements are added. We have recently shown that crowding cannot be explained by simple low-level interactions and that grouping is a key component instead. We presented a vernier flanked by arrays of vertical lines. When the flankers had the same lengths as the vernier, offset discrimination was strongly impaired. Whe...
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ژورنال
عنوان ژورنال: Current Biology
سال: 2011
ISSN: 0960-9822
DOI: 10.1016/j.cub.2011.07.025