Cats see subjective contours

Vision Res. 1988;28(8):861-5. doi: 10.1016/0042-6989(88)90095-8.


Behavioural techniques were used to determine whether cats are able to see subjective contours. Through several stages of testing with increasingly complex displays, cats continued to respond to a figure defined by subjective contours. This result provides the first direct evidence that a nonhuman perceives subjective contours.

Publication types

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

MeSH terms

  • Animals
  • Cats / physiology*
  • Female
  • Form Perception / physiology*
  • Humans
  • Pattern Recognition, Visual / physiology