Table 1.

Equations used to fit relationship between weighting of each target and luminance ratio and best fitting parameters

Stimulus Location	Fitting Function	Parameter	Monkey G 0–50 ms	Monkey G 50–100 ms	Monkey P 0–50 ms	Monkey P 50–100 ms
Superimposed	wb = wb0 + ab(1 − e−bbc)	wb0	0.27	0.16	0.22	0.33
		ab	0.68	0.83	0.70	0.87
		b	0.18	0.09	0.20	0.03
		r2	0.9868	0.9710	0.9933	0.9013
	wd = wd0 + ade−bdc	wd0	0.01	0.07	0.02	0.04
		ad	0.46	0.55	0.43	0.41
		bd	0.33	1.16	0.32	0.13
		r2	0.8953	0.7980	0.9534	0.7270
Separated by 3°	wb = wb0 + abc	wb0	0.49	0.46	0.49	0.38
		ab	0.007	0.004	0.005	0.001
		r2	0.9531	0.9620	0.9417	0.9313
	wd = wd0 + adc	wd0	0.45	0.35	0.45	0.40
		ad	−0.007	0.004	−0.002	0.003
		r2	0.9388	0.8365	0.8811	0.9071
Separated by 6°	wb = wb0 + abc	wb0	0.48	0.38	0.48	0.44
		ab	0.002	0.005	0.004	0.000
		r2	0.9740	0.9370	0.9746	0.9742
	wd = wd0 + adc	wd0	0.51	0.22	0.54	0.38
		ad	−0.005	0.003	−0.002	0.001
		r2	0.9436	0.9152	0.9488	0.9660

All values, including r², are averaged across stimuli that presented different pairs of target directions. Subscripts b and d indicate brighter and dimmer stimuli, respectively.