Abstract

Thresholds of 1-deg, 200-msec, 641-nm foveal test flashes rise after an exchange of Π5-equated 536- and 626-nm fields, taking about 30 sec to recover. Silent substitution (no rise of threshold after the exchange) occurs, however, if these fields are alternated during adaptation. Thresholds for a 1-deg, 20-msec test rise similarly after an exchange but recover in only 0.5 sec and are not influenced by alternation of the 536- and 626-nm fields. These results can be accounted for if the 641-nm tests are detected not through pathways controlled by long-wavelength cones alone but through nonopponent (20-msec) and opponent (200-msec) pathways whose sensitivities may be reduced by transient inputs from other cones.

© 1982 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Isolation of the middle- and long-wavelength-sensitive cones in normal trichromats

Andrew Stockman, Donald I. A. MacLeod, and Jeffrey A. Vivien
J. Opt. Soc. Am. A 10(12) 2471-2490 (1993)

Field additivity of Stiles’s Pi-4 color mechanism

Adam Reeves
J. Opt. Soc. Am. A 4(3) 525-529 (1987)

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 (5)

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