Accession Number:

AD0611902

Title:

EFFECT OF SURROUND AND STIMULUS LUMINANCE ON THE DISCRIMINATION OF HUE

Descriptive Note:

Corporate Author:

NAVAL MEDICAL RESEARCH LAB NEW LONDON CT

Personal Author(s):

Report Date:

1964-05-01

Pagination or Media Count:

5.0

Abstract:

The effects of changes in the luminance of the stimulus and the surround on hue discrimination were experimentally investigated, using the method of constant stimuli. All observations were made at 550 millimicrons the standard deviation was used as the measure of sensitivity. Surround luminance was found to have no effect on hue discrimination until the surround had three or more times the luminance of the stimulus. As the surround to stimulus ratios increased, the threshold rose sharply. Increase of the stimulus intensity over a range of 1.5 log units from the photopic threshold increased the discrimination threshold by an average of only about 2 millimicrons.

Subject Categories:

  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE