Cooperative neural processes involved in stereoscopic acuity

Exp Brain Res. 1979 Aug 1;36(3):585-97. doi: 10.1007/BF00238525.


Results of psychophysical experiments are reported showing that synchrony, appropriate relative placement, and absence of standing disparity are important conditions to be met by members of a target configuration if they are to participate in the cooperative neural processes leading to the best disparity discrimination. Consecutive binocular presentation of the members of a stereo target decreases stereoacuity by a factor of about 10, and a step disparity displacement of a single line target needs to be larger still to be detected as a depth stimulus. A standing disaprity of even one minute of arc at least doubles the disaprity disxrimination threshold. It is postulated that a differencing mechanism operates on the depth signal of individual features; the temporal and spatial optima of target presentation for stereoscopic acuity outline the character of the concerned operations.

Publication types

  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Depth Perception / physiology*
  • Discrimination Learning / physiology
  • Dominance, Cerebral / physiology*
  • Fixation, Ocular
  • Humans
  • Psychophysics
  • Retina / physiology
  • Visual Acuity*