June 2007
Volume 7, Issue 9
Free
Vision Sciences Society Annual Meeting Abstract  |   June 2007
Precision of depth judgement from binocular disparity is heritable
Author Affiliations
  • Jeremy Wilmer
    Psychology Department, School of Arts and Sciences, University of Pennsylvania
  • Benjamin Backus
    Psychology Department, School of Arts and Sciences, University of Pennsylvania
Journal of Vision June 2007, Vol.7, 831. doi:10.1167/7.9.831
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      Jeremy Wilmer, Benjamin Backus; Precision of depth judgement from binocular disparity is heritable. Journal of Vision 2007;7(9):831. doi: 10.1167/7.9.831.

      Download citation file:


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

      ×
  • Supplements
Abstract

One in three individuals is essentially blind to some range of stereoscopic depth for briefly presented stimuli (Richards, 1970). The relative contribution of genes and environment to these individual differences is unknown.

The degree to which identical twins are more similar for a given trait than fraternal twins indicates the genetic heritability of that trait. We used a recently developed stereo test of perceived depth by van Ee & Richards (2002) to test 90 identical and 20 fraternal twin pairs on a range of binocular disparities (13 levels from 2 deg crossed to 2 deg uncrossed) and at two durations (.2 or 1.5 sec). We computed the precision of each individual's depth judgements for near and far disparities, and for long and short durations.

Identical twins' depth estimation precision was more similar than fraternal twins' across the disparities and durations tested, suggesting heritability. This difference reached statistical significance (p=0.01) for the uncrossed, long duration stimuli, so performance over this spatial and temporal range may be particularly heritable. However, performance was generally poorer for crossed and short duration stimuli, so future testing may reveal heritability at other depths and display durations.

Our results suggest that one's ability to precisely determine depth from binocular disparity is heritable, at least for some spatial and temporal ranges, and they provide the first step toward identifying genes that influence depth perception.

Richards W. (1970) Stereopsis and stereoblindness. Exp Br Res, 10, 380–8.

van Ee R., Richards W. (2002) A planar and a volumetric test for stereoanomaly.

Wilmer, J. Backus, B. (2007). Precision of depth judgement from binocular disparity is heritable [Abstract]. Journal of Vision, 7(9):831, 831a, http://journalofvision.org/7/9/831/, doi:10.1167/7.9.831.
Footnotes
 Support: NEI Kirschstein-NRSA postdoctoral fellowship to JBW and NIH RO1-EY13988 to BTB.
×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×