Abstract
It was suggested that multiple chromatic channels existed in the higher level of our color vision. However their precise features are not yet clear. Our aim is to investigate the multiple chromatic channels by using dichoptic masking. A target stimulus was presented to one eye and a mask stimulus to the other eye. The target was Gabor modulated along the r/g axis. The mask consisted of random dots modulated varied color directions. Results of one observer suggest that the cardinal channels and another channel might exist. But, results of the other observer do not suggest that color channels exist.
