Spatiotopic perceptual learning mediated by retinotopic processing and attentional remapping.

Item request has been placed! ×
Item request cannot be made. ×
loading   Processing Request
Read Online Read More Add to Saved list
  • Author(s): Zhang E;Zhang E; Zhang GL; Li W
  • Source:
    The European journal of neuroscience [Eur J Neurosci] 2013 Dec; Vol. 38 (12), pp. 3758-67. Date of Electronic Publication: 2013 Oct 01.
  • Publication Type:
    Journal Article; Research Support, Non-U.S. Gov't
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: Wiley-Blackwell Country of Publication: France NLM ID: 8918110 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1460-9568 (Electronic) Linking ISSN: 0953816X NLM ISO Abbreviation: Eur J Neurosci Subsets: MEDLINE
    • Publication Information:
      Publication: : Oxford : Wiley-Blackwell
      Original Publication: Oxford, UK : Published on behalf of the European Neuroscience Association by Oxford University Press, c1989-
    • Subject Terms:
      Attention* ; Discrimination Learning* ; Form Perception* ; Vision, Ocular*; Visual Cortex/*physiology; Eye Movements ; Humans ; Retina/physiology ; Young Adult
    • Abstract:
      Visual processing takes place in both retinotopic and spatiotopic frames of reference. Whereas visual perceptual learning is usually specific to the trained retinotopic location, our recent study has shown spatiotopic specificity of learning in motion direction discrimination. To explore the mechanisms underlying spatiotopic processing and learning, and to examine whether similar mechanisms also exist in visual form processing, we trained human subjects to discriminate an orientation difference between two successively displayed stimuli, with a gaze shift in between to manipulate their positional relation in the spatiotopic frame of reference without changing their retinal locations. Training resulted in better orientation discriminability for the trained than for the untrained spatial relation of the two stimuli. This learning-induced spatiotopic preference was seen only at the trained retinal location and orientation, suggesting experience-dependent spatiotopic form processing directly based on a retinotopic map. Moreover, a similar but weaker learning-induced spatiotopic preference was still present even if the first stimulus was rendered irrelevant to the orientation discrimination task by having the subjects judge the orientation of the second stimulus relative to its mean orientation in a block of trials. However, if the first stimulus was absent, and thus no attention was captured before the gaze shift, the learning produced no significant spatiotopic preference, suggesting an important role of attentional remapping in spatiotopic processing and learning. Taken together, our results suggest that spatiotopic visual representation can be mediated by interactions between retinotopic processing and attentional remapping, and can be modified by perceptual training.
      (© 2013 Federation of European Neuroscience Societies and John Wiley & Sons Ltd.)
    • Contributed Indexing:
      Keywords: humans; location specificity; orientation discrimination; reference frame; spatiotopic representation
    • Publication Date:
      Date Created: 20131015 Date Completed: 20140815 Latest Revision: 20220309
    • Publication Date:
      20221213
    • Accession Number:
      10.1111/ejn.12379
    • Accession Number:
      24118649