Disparity tuning in macaque area V4

David A. Hinkle, Charles E. Connor

Research output: Contribution to journalArticlepeer-review

59 Scopus citations


Neural processing of stereoscopic depth is conventionally associated with the dorsal (spatial) pathway in primate visual cortex. The role of depth information in the ventral (object) pathway has been less certain. We found prominent tuning for stereoscopic disparity in area V4, an intermediate stage in the ventral pathway. Eighty percent of the cells in our sample exhibited significant disparity tuning over the -1.0° to 1.0° range, and the majority showed >2:1 response differences. Tuning function shapes were similar to those reported previously in other visual areas. We observed a significant tuning bias towards crossed (near) disparities. This could reflect an emphasis in the ventral pathway on foreground objects or parts of objects projecting towards the viewer.

Original languageEnglish (US)
Pages (from-to)365-369
Number of pages5
Issue number2
StatePublished - Feb 12 2001


  • Depth
  • Disparity
  • Monkey
  • Stereopsis
  • V4
  • Ventral pathway

ASJC Scopus subject areas

  • General Neuroscience


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