Perceiving the intensity of light.

Journal Article (Review;Journal Article)

The relationship between luminance (i.e., the photometric intensity of light) and its perception (i.e., sensations of lightness or brightness) has long been a puzzle. In addition to the mystery of why these perceptual qualities do not scale with luminance in any simple way, "illusions" such as simultaneous brightness contrast, Mach bands, Craik-O'Brien-Cornsweet edge effects, and the Chubb-Sperling-Solomon illusion have all generated much interest but no generally accepted explanation. The authors review evidence that the full range of this perceptual phenomenology can be rationalized in terms of an empirical theory of vision. The implication of these observations is that perceptions of lightness and brightness are generated according to the probability distributions of the possible sources of luminance values in stimuli that are inevitably ambiguous.

Full Text

Duke Authors

Cited Authors

  • Purves, D; Williams, SM; Nundy, S; Lotto, RB

Published Date

  • January 2004

Published In

Volume / Issue

  • 111 / 1

Start / End Page

  • 142 - 158

PubMed ID

  • 14756591

Electronic International Standard Serial Number (EISSN)

  • 1939-1471

International Standard Serial Number (ISSN)

  • 0033-295X

Digital Object Identifier (DOI)

  • 10.1037/0033-295x.111.1.142


  • eng