Table 3. Table of the nominal maximum contrast per direction.

The top row indicates the chromatic direction in the LM plane.The L, M, and S contrast rows show the desired contrast on the L, M, and S cones, respectively. The total contrast is the vectorlength of stimuli made up of the L, M, and S cone contrast components and is the definition of contrast used in this study.

Direction	−45°	−22.5°	0°	22.5°	45°	67.5°	90°	112.5°
L-Contrast	8.49%	7.85%	14%	18.48%	42.43%	15.31%	0%	4.98%
M-Contrast	8.49%	3.25%	0%	7.65%	42.43%	36.96%	22%	12.01%
S-Contrast	0%	0%	0%	0%	0%	0%	0%	0%
Total Contrast	12%	8.5%	14%	20%	60%	40%	22%	13%