OSA's Digital Library

Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 61, Iss. 6 — Jun. 1, 1971
  • pp: 828–830

Comparison of Two Measures of Metacontrast

THOMAS B. FLAHERTY and HALSEY H. MATTESON  »View Author Affiliations


JOSA, Vol. 61, Issue 6, pp. 828-830 (1971)
http://dx.doi.org/10.1364/JOSA.61.000828


View Full Text Article

Acrobat PDF (340 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

The temporal course of reduction of test-stimulus effectiveness under conditions of metacontrast was studied with two different suprathreshold brightness-matching procedures. (1) Test-stimulus luminance was varied to make apparent brightness of the test stimulus equal to the brightness of a constant-luminance reference stimulus. (2) Reference-stimulus luminance was varied to match the apparent brightness of a test stimulus maintained at constant luminance. Functions obtained from two observers when the teststimulus luminance was varied were typical metacontrast functions with maximum reduction of teststimulus effectiveness when the test stimulus preceded the background by 50 ms, and the shape of the functions was highly similar to functions obtained previously with a disk-ring stimulus configuration. Functions obtained by varying reference-stimulus luminance were highly variable both between observers and within observers. The difficulties encountered with this second method probably resulted from glare from high-luminance test and surround fields.

Citation
THOMAS B. FLAHERTY and HALSEY H. MATTESON, "Comparison of Two Measures of Metacontrast," J. Opt. Soc. Am. 61, 828-830 (1971)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-61-6-828

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited