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      • Department of Psychology
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      What crowding can tell us about object representations

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      Author
      Manassi, M.
      Lonchampt, S.
      Clarke, Aaron
      Herzog, M. H.
      Date
      2016
      Source Title
      Journal of Vision
      Print ISSN
      1534-7362
      Publisher
      Association for Research in Vision and Ophthalmology Inc.
      Volume
      16
      Issue
      3
      Language
      English
      Type
      Article
      Item Usage Stats
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      108
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      Abstract
      In crowding, perception of a target usually deteriorates when flanking elements are presented next to the target. Surprisingly, adding further flankers can lead to a release from crowding. In previous work we showed that, for example, vernier offset discrimination at 9� of eccentricity deteriorated when a vernier was embedded in a square. Adding further squares improved performance. The more squares presented, the better the performance, extending across 20� of the visual field. Here, we show that very similar results hold true for shapes other than squares, including unfamiliar, irregular shapes. Hence, uncrowding is not restricted to simple and familiar shapes. Our results provoke the question of whether any type of shape is represented at any location in the visual field. Moreover, small changes in the orientation of the flanking shapes led to strong increases in crowding strength. Hence, highly specific shape-specific interactions across large parts of the visual field determine vernier acuity.
      Permalink
      http://hdl.handle.net/11693/37153
      Published Version (Please cite this version)
      http://dx.doi.org/10.1167/16.3.35
      Collections
      • Aysel Sabuncu Brain Research Center (BAM) 201
      • Department of Psychology 177
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