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An empirical explanation of brightness.

Publication ,  Journal Article
Williams, SM; McCoy, AN; Purves, D
Published in: Proceedings of the National Academy of Sciences of the United States of America
October 1998

In this second part of our study on the mechanism of perceived brightness, we explore the effects of manipulating three-dimensional geometry. The additional scenes portrayed here demonstrate that the same luminance profile can elicit different sensations of brightness as a function of how the objects in the scene are arranged in space. This further evidence confirms the implication of the scenes presented in the accompanying paper, namely that sensations of relative brightness-including standard demonstrations of simultaneous brightness contrast-cannot arise by computations of local contrast. The most plausible explanation of the full range of perceptual phenomena we have described is an empirical strategy that links the luminance profile in a visual stimulus with an association (the percept) that represents the profile's most probable real-world source.

Duke Scholars

Published In

Proceedings of the National Academy of Sciences of the United States of America

DOI

EISSN

1091-6490

ISSN

0027-8424

Publication Date

October 1998

Volume

95

Issue

22

Start / End Page

13301 / 13306

Related Subject Headings

  • Visual Perception
  • Models, Psychological
  • Models, Neurological
  • Lighting
  • Light
  • Humans
  • Cues
  • Contrast Sensitivity
 

Citation

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MLA
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Williams, S. M., McCoy, A. N., & Purves, D. (1998). An empirical explanation of brightness. Proceedings of the National Academy of Sciences of the United States of America, 95(22), 13301–13306. https://doi.org/10.1073/pnas.95.22.13301
Williams, S. M., A. N. McCoy, and D. Purves. “An empirical explanation of brightness.Proceedings of the National Academy of Sciences of the United States of America 95, no. 22 (October 1998): 13301–6. https://doi.org/10.1073/pnas.95.22.13301.
Williams SM, McCoy AN, Purves D. An empirical explanation of brightness. Proceedings of the National Academy of Sciences of the United States of America. 1998 Oct;95(22):13301–6.
Williams, S. M., et al. “An empirical explanation of brightness.Proceedings of the National Academy of Sciences of the United States of America, vol. 95, no. 22, Oct. 1998, pp. 13301–06. Epmc, doi:10.1073/pnas.95.22.13301.
Williams SM, McCoy AN, Purves D. An empirical explanation of brightness. Proceedings of the National Academy of Sciences of the United States of America. 1998 Oct;95(22):13301–13306.
Journal cover image

Published In

Proceedings of the National Academy of Sciences of the United States of America

DOI

EISSN

1091-6490

ISSN

0027-8424

Publication Date

October 1998

Volume

95

Issue

22

Start / End Page

13301 / 13306

Related Subject Headings

  • Visual Perception
  • Models, Psychological
  • Models, Neurological
  • Lighting
  • Light
  • Humans
  • Cues
  • Contrast Sensitivity