Abstract

The threshold visibility of uniformly moving colored gratings was investigated. The gratings were equiluminous sine-wave patterns, generated on a color-television display. The traveling waves were detected by the subject over a range of three log units of background illuminance, including various spatial- and temporal-frequency combinations. The experiments indicate that no resonance phenomena occur in the spatiotemporal color-discrimination system of the eye. This system probably functions as a low-pass filter. The color coding takes place in much narrower frequency bands than the brightness coding. A regular motion of the pattern never enhances the visibility of the color gratings. The temporal characteristics of the chromatic-discrimination system show very much resemblance to its spatial qualities. Our experiments show that the threshold chromatic contrast is proportional to the square root of the illuminance. This fundamental relationship can easily be understood from the statistical properties of the photons, absorbed in the differential receptor systems.

© 1969 Optical Society of America

Full Article  |  PDF Article
Related Articles
Motion nulls for white versus isochromatic gratings in infants and adults

Davida Y. Teller and Delwin T. Lindsey
J. Opt. Soc. Am. A 6(12) 1945-1954 (1989)

Dissociation of achromatic and chromatic processing of spatial form and temporal modulation by the titration method

D. Regan, Y. Nakano, and P. K. Kaiser
J. Opt. Soc. Am. A 10(6) 1314-1323 (1993)

Orientation selectivity in detection of chromatic gratings

R. Frank Quick and Robert N. Lucas
Opt. Lett. 4(9) 306-308 (1979)

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 (13)

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

Tables (2)

You do not have subscription access to this journal. Article tables 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

Equations (8)

You do not have subscription access to this journal. Equations 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