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      • Department of Psychology
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      Border ownership selectivity in human early visual cortex and its modulation by attention

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      Author(s)
      Fang, F.
      Boyacı, Hüseyin
      Kersten, D.
      Date
      2009
      Source Title
      The Journal of Neuroscience
      Print ISSN
      0270-6474
      Electronic ISSN
      1529-2401
      Publisher
      Society for Neuroscience
      Volume
      29
      Issue
      2
      Pages
      460 - 465
      Language
      English
      Type
      Article
      Item Usage Stats
      257
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      163
      downloads
      Abstract
      Natural images are usually cluttered because objects occlude one another. A critical aspect of recognizing these visual objects is to identify the borders between image regions that belong to different objects. However, the neural coding of border ownership in human visual cortex is largely unknown. In this study, we designed two simple but compelling stimuli in which a slight change of contextual information could induce a dramatic change of border ownership. Using functional MRI adaptation, we found that border ownership selectivity in V2 was robust and reliable across subjects, and it was largely dependent on attention. Our study provides the first human evidence that V2 is a critical area for the processing of border ownership and that this processing depends on the modulation from higher-level cortical areas.
      Keywords
      Attention
      Border ownership
      Figure-ground segregation
      fMRI
      Vision
      Visual cortex
      Permalink
      http://hdl.handle.net/11693/22856
      Published Version (Please cite this version)
      http://dx.doi.org/10.1523/JNEUROSCI.4628-08.2009
      Collections
      • Aysel Sabuncu Brain Research Center (BAM) 228
      • Department of Psychology 216
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