Table 1. Range of contrast difference conditions used for the experimental task for monkeys M1 and M2.

The top sub-table shows the contrast difference conditions (in %) used for M1, and the bottom sub-table shows the values for M2.

	Contrast difference condition (monkey M1)
Range	44.7	35.9	24.8	13.3	0	−13.3	−24.8	−35.9	−44.7
RF 1	66	58.6	51.7	44.3	36.5	31	27	22.7	21.2
RF 2	21.2	22.7	27	31	36.5	44.3	51.7	58.6	66
	Contrast difference condition (monkey M2)
Range	42.7	34	24.5	13.6	0	−13.6	−24.5	−34	−42.7
RF 1	62.7	57.5	52.2	46	39.2	32.5	27.7	23.5	20
RF 2	20	23.5	27.7	32.5	39.2	46	52.2	57.5	62.7