Central factors contributing to para-contrast modulation of contour and brightness perception

Bruno G. Breitmeyer, Ralph Ziegler, Gert Hauske

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Following up on a prior study of contour and brightness processing in visual masking (Breitmeyer et al., 2006), we investigated the effects of a binocular and dichoptic para-contrast masking on the visibility of the contour and brightness of a target presented to the other eye. Combined, the results support the contributions of several cortical processes to para-contrast: (1) two central sources of inhibition, one long-latency and prolonged and the other short-latency and brief; (2) binocular rivalry suppression; and (3) a facilitatory effect peaking at different SOAs for the contour and the brightness tasks, reflecting; (4) known properties of two separate cortical systems, one a fast contour-processing pathway and the other a slower brightness-processing pathway.

Original languageEnglish
Pages (from-to)191-196
Number of pages6
JournalVisual Neuroscience
Volume24
Issue number2
DOIs
StatePublished - Mar 2007

Keywords

  • Brightness
  • Contour
  • Cortical processing
  • Facilitation
  • Suppression

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