Table 1.

Cone signals corresponding to magenta, blue and purple stimuli. Cone signals of S, M and L cones were calculated as normalized quantum catches using equation (2.1) and the signal of DC was calculated as the mean signal of L and M cones (equation 2.2).

	S	M	L	DC
magenta	0.203	0.105	0.091	0.098
blue	0.200	0.122	0.062	0.092
purple	0.112	0.094	0.080	0.087