Abstract

Response times were measured for a visual search task in which the observer was required to find a target that differed from distracting stimuli only in color. In the first experiment the search time was measured as a function of display density for both small and large color differences. With small color differences response time increased with display density, indicating a serial search, but with large color differences response time was constant, indicating a parallel search. In the second experiment the color difference required for parallel search was measured in eight different directions from the distracter chromaticity. These color differences were much larger than threshold color differences and were not well represented by the ellipse used to describe the threshold contour around a point in color space.

© 1990 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Visual search for color differences with foveal and peripheral vision

Allen L. Nagy, Robert R. Sanchez, and Thomas C. Hughes
J. Opt. Soc. Am. A 7(10) 1995-2001 (1990)

Color category influences heterogeneous visual search for color

Kenji Yokoi and Keiji Uchikawa
J. Opt. Soc. Am. A 22(11) 2309-2317 (2005)

The achromatic mechanism and mechanisms tuned to chromaticity and luminance in visual search

Allen L. Nagy and Marc Winterbottom
J. Opt. Soc. Am. A 17(3) 369-379 (2000)

References

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
Login to access OSA Member Subscription

Cited By

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
Login to access OSA Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files 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
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics 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
Login to access OSA Member Subscription