Skip to main content

Dissociation between Contour-based and Texture-based Shape Perception: A Single Case Study

Buy Article:

$55.00 plus tax (Refund Policy)


A single case study of a patient suffering from a temporo-parietal lesion is presented. He was impaired at recognizing shape on the basis of texture information, whereas shape recognition on the basis of contours seemed comparatively preserved. To investigate the impaired level in texture processing, we used two alternative forced-choice tasks totestfigure-ground segregation based on textural differences in contrasting modalities (tactile vs. visual) and viewing conditions (static vs. apparently moving stimuli). The results showed that the deficit was specific to visual stimuli (both static and dynamic). Moreover, this deficitdid not occur with local texture analysis, but was always present in global texture segregation tasks. This suggests thatcontour analysis and texture segregation are separable operations in shape processing. The patient's impairments are attributed to an inability to activate global processing of stimuli defined by texture but not by contours.

Document Type: Research Article


Publication date: 1997-09-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more