December 1973
Volume 12, Issue 12
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Articles  |   December 1973
A Stereo Field Map with Implications for Disparity Processing
Author Affiliations
  • WHITMAN RICHARDS
    Department of Psychology, Massachusetts Institute of Technology Cambridge, Mass. 02139
  • D. REGAN
    Department of Communication, University of Keele, Keele, Staffordshire, England
Investigative Ophthalmology & Visual Science December 1973, Vol.12, 904-909. doi:
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      WHITMAN RICHARDS, D. REGAN; A Stereo Field Map with Implications for Disparity Processing. Invest. Ophthalmol. Vis. Sci. 1973;12(12):904-909.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

The neural basis for stereopsis may be divided into at least two components: one mechanism that processes divergent disparities and a second mechanism that processes convergent disparities. he most clearcut evidence for the presence of these two components is the finding that some individuals lack either one or the other. However, when the ability to process both convergent and divergent disparities is present in the same individual it is more difficult to demonstrate the presence of two separate mechanisms. In this paper, the mechanisms for stereopsis are shown to consist of at least two components in the same individual. This demonstration is based upon a new kind of perimetry whereby field maps for stereopsis are plotted for both convergent and divergent disparities. Extensive measurements on one observer show that the zone of the visual field over which convergent disparities are processed may differ quite distinctively from the zone of the visual field over which divergent disparities are processed.

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