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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 63, Iss. 7 — Jul. 1, 1973
  • pp: 879–883

Spatial factors in the Broca—Sulzer phenomenon

Lawrence E. Arend, Jr.  »View Author Affiliations

JOSA, Vol. 63, Issue 7, pp. 879-883 (1973)

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A 150-ms flash of light is not only brighter than shorter flashes of the same luminance but is also brighter than longer flashes. The brightness decrement resulting from duration increments, the Broca—Sulzer phenomenon, does not occur when the contours of the stimulus field are heavily blurred. This suggests that the phenomenon is due to the temporal properties of a contour-dependent inhibitory process in the visual system. The result conflicts with the predictions of a lateral-inhibition explanation for the Broca—Sulzer phenomenon, but may be explainable in terms of movements of illuminance contours on the retina.

Lawrence E. Arend, Jr., "Spatial factors in the Broca—Sulzer phenomenon," J. Opt. Soc. Am. 63, 879-883 (1973)

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