Table 2.

Parameters used to predict photopigment weights of retinal neurons

Parameters	Retinal locations
	Superior retina	Inferior retina
Proportion of genuine S conesa	5.5%	5.5%
Fraction of M opsin coexpression	1	0.1
Strength of rod-cone coupling	0.74	0.74
Gain of S-cone pathway	22.8	22.8
Photopigment weights (M, S, and rod weights)
Predictions
Opponent	−0.39, 0.52, and 0.09	−0.13, 0.56, and 0.31
Nonopponent	0.54, 0.03, and 0.43	0.06, 0.52, and 0.43
Measurements
Opponent	−0.46, 0.37, and 0.15	−0.06, 0.69, and 0.25
Horizontal cell (flash experiment)a	0.52, 0.02, and 0.46	0.09, 0.50, and 0.41
Horizontal cell (flicker experiment)a	0.51, 0.06, and 0.43	0.07, 0.49, and 0.44
Brisk-transient ganglion cella	0.53, 0.05, and 0.43	0.06, 0.54, and 0.41

See Appendix D for model details.

^aYin et al., 2006