TABLE 1.

Summary of the mean noise correlations in pairs of MT neurons, divided according to whether the two neurons in each pair have more versus less similar preferred directions, preferred speeds, and receptive field (RF) separations

	Preferred Direction		Preferred Speed		RF Separation
	ΔPD < 60°	ΔPD > 60°	ΔPS < 20°/s	ΔPS > 20°/s	ΔRF < 7.5°	ΔRF > 7.5°
Noise correlation, 500 ms	0.14	0.028	0.11	0.0390	0.095	0.025
Statistical significance	P = 6.7 × 10−7		P = 5.6 × 10−4		P = 0.0028
Noise correlation, 150 ms	0.12	0.020	0.09	0.0335	0.078	0.024
Statistical significance	P = 6.7 × 10−7		P = 0.0015		P = 0.006
Number of pairs	69	74	87	78	122	43

“Noise correlation” is based on eight speeds of target motion for each pair of cells and then averaged across many pairs. “Statistical significance” is based on a comparison of the two groups of pairs with more versus less similar stimulus preferences.