CONVERGENCE AS A CUE TO ABSOLUTE DISTANCE

Abstract

The role of convergence and accommodation in the perception of absolute distance was investigated. Perceived absolute distance was measured by using a visual ruler consisting of a monocularly viewed alley. The apparent distance of a binocular object was judged with respect to the monocular alley for convergence values of 4 degrees or less. With accommodation held constant, only a few subjects perceived different distances for different convergence values. With both absolute accommodation and accommodative differences in agreement with convergence, the proportion of subjects who could make this discrimination increased. In general, the results indicate the inadequacy of convergence as a cue to perceived absolute distance for the range of convergence values used in this study. (Author)

Document Details

Document Type
Technical Report
Publication Date
May 17, 1961
Accession Number
AD0257951

Entities

People

  • Walter C. Gogel

Organizations

  • United States Army Medical Research Laboratory

Tags

DTIC Thesaurus Topics

  • Agreements
  • Binoculars
  • Convergence
  • Discrimination
  • Mental Processes
  • Optical Equipment
  • Optical Magnification Devices
  • Perception
  • Psychological Phenomena And Processes

Readers

  • Vision Science/Vision Psychology/Cognitive Neuroscience.