Geometrical features underlying the perception of collinearity.

Item request has been placed! ×
Item request cannot be made. ×
loading   Processing Request
Read More Add to Saved list
  • Author(s): Morgan M;Morgan M;Morgan M; Dillenburger B; Dillenburger B
  • Source:
    Vision research [Vision Res] 2016 Nov; Vol. 128, pp. 83-94. Date of Electronic Publication: 2016 Oct 17.
  • Publication Type:
    Journal Article; Research Support, Non-U.S. Gov't
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: Elsevier Science Ltd Country of Publication: England NLM ID: 0417402 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1878-5646 (Electronic) Linking ISSN: 00426989 NLM ISO Abbreviation: Vision Res Subsets: MEDLINE
    • Publication Information:
      Publication: Kidlington, Oxford : Elsevier Science Ltd.
      Original Publication: Oxford [etc.]
    • Subject Terms:
      Distance Perception* ; Optical Illusions* ; Pattern Recognition, Visual* ; Space Perception*; Adult ; Discrimination Learning ; Female ; Humans ; Male ; Orientation
    • Abstract:
      The magnitude of the Poggendorff bias in perceived collinearity was measured with a 2AFC task and roving pedestal, and was found to be in the region of 6-8deg, within the range of previous estimates. Further measurements dissected the bias into several components: (1) The small (∼1deg) repulsion of the orientation of the pointer from the parallel, probably localized in the part of the line near the intersection (2) A small (<1deg) location bias affecting the intersection of pointers and inducing lines; and (3) A larger (>1deg) bias in the orientation of virtual lines crossing the gap between two parallels, towards the orientation of the parallels, or equivalently (4) An orthogonal bias in actively constructing a virtual line across the gap. We conclude that orientation repulsion by itself is an inadequate explanation of the Poggendorff effect, and that a full explanation must take account of the way in which observers construct virtual lines in visual space in order to carry out elementary geometrical tasks such as extrapolation.
      (Copyright © 2016. Published by Elsevier Ltd.)
    • Grant Information:
      United Kingdom Wellcome Trust
    • Contributed Indexing:
      Keywords: Alignment acuity; Poggendorff; Spatial vision
    • Publication Date:
      Date Created: 20160925 Date Completed: 20170721 Latest Revision: 20191216
    • Publication Date:
      20221213
    • Accession Number:
      10.1016/j.visres.2016.09.008
    • Accession Number:
      27664353