Abstract

Results from psychophysics and single-unit recordings suggest that color vision comprises multiple stages of processing. Postreceptoral channels appear to consist of both a stage of broadly tuned opponent channels that compare cone signals and a subsequent stage, which includes cells tuned to many different directions in color space. The chromatic visual evoked potential (crVEP) has demonstrated chromatic processing selective for cardinal axes of color space. However, crVEP evidence for higher-order color mechanisms is lacking. The present study aimed to assess the contribution of lower- and higher-order color mechanisms to the crVEP by using chromatic contrast adaptation. The results reveal the presence of mechanisms tuned to intermediate directions in color space in addition to those tuned to the fundamental cardinal axes.

©2012 Optical Society of America

Color tuning in alert macaque V1 assessed with fMRI and single-unit recording shows a bias toward daylight colors

Rosa Lafer-Sousa, Yang O. Liu, Luis Lafer-Sousa, Michael C. Wiest, and Bevil R. Conway
J. Opt. Soc. Am. A 29(5) 657-670 (2012)

Aftereffect of contrast adaptation to a chromatic notched-noise stimulus

Ichiro Kuriki
J. Opt. Soc. Am. A 24(7) 1858-1872 (2007)

1/f noise in human color vision: the role of S-cone signals

José M. Medina and José A. Díaz
J. Opt. Soc. Am. A 29(2) A82-A95 (2012)

Non-cardinal color mechanism strength differs across color planes but not across subjects

Karen L. Gunther
J. Opt. Soc. Am. A 31(4) A293-A302 (2014)

The perceptual balance of color

Kyle C. McDermott and Michael A. Webster
J. Opt. Soc. Am. A 29(2) A108-A117 (2012)