Impairments in spatial generalization of visual skills after V4 and TEO lesions in macaques (Macaca mulatta)

Behav Neurosci. 2003 Dec;117(6):1441-7. doi: 10.1037/0735-7044.117.6.1441.


The authors tested the spatial generalization of shape and color discriminations in 2 monkeys, in which 3 visual field quadrants were affected, respectively, by lesions in area V4, TEO, or both areas combined. The fourth quadrant served as a normal control. The monkeys were trained to discriminate stimuli presented in a standard location in each quadrant, followed by tests of discrimination performance in new locations in the same quadrant. In the quadrant affected by the V4 + TEO lesion, the authors found temporary but striking deficits in spatial generalization of shape and color discriminations over small distances, suggesting a contribution of areas V4 and TEO to short-range spatial generalization of visual skills.

Publication types

  • Comparative Study

MeSH terms

  • Animals
  • Color
  • Discrimination Learning / physiology*
  • Generalization, Psychological / physiology*
  • Macaca mulatta
  • Male
  • Space Perception / physiology*
  • Visual Cortex / physiology*
  • Visual Perception / physiology*