The influence of illusory contours on the detection of luminance increments and decrements

Mark E. McCourt, Kristen Paulson

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

The experiment of Dresp and Bonnet [(1991) Vision Research, 31, 1813-1817] was replicated and extended to include measurements of both luminance increment and decrement detection across high luminance illusory contours. The results reveal that illusory contours can influence the detectability of both luminance decrements and increments and, in addition, that the magnitude and even the direction of the effect which illusory contours produce on visual thresholds may vary considerably across individual observers. Finally, in contrast to the monophasic pattern of threshold variation across low luminance illusory contours, the pattern across high luminance contours is oscillatory.

Original languageEnglish (US)
Pages (from-to)2469-2475
Number of pages7
JournalVision research
Volume34
Issue number18
DOIs
StatePublished - Sep 1994

Keywords

  • Brightness contrast
  • Decrement threshold
  • Illusory contours
  • Increment threshold
  • Lateral interactions
  • Subjective contours

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems

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