TABLE 2.

Receptive-field differences between correlated and uncorrelated Y_C–Y_A cell pairs

	Peak-Time Difference (YC − YA)	Zero-Crossing Difference (YC − YA)	Rebound Time Difference (YC − YA)	Half-Duration Difference (YC − YA)	Biphasic Index (YC/YA)	Rebound Index (YC/YA)
Tightly correlated (n = 15)	−1.86**	−3.00**	−4.65*	−2.79*	1.10	1.07
Uncorrelated (n = 69)	−2.40***	−3.77***	−4.74***	−2.34**	1.07	1.04

	RF Center Size (YC/YA)	RF Surround Size (YC/YA)	RF Surround/Center Amplitude (YC/YA)	Response Gain (YC/YA)	Response offset (YC − YA)	Spatial Linearity (YC/YA)
Tightly correlated (n = 15)	1.55*	1.52	1.79	1.20	0.00	1.63
Uncorrelated (n = 69)	1.67***	1.41	2.23	1.26	0.02	3.65**

Peak-time difference: the Y_A peak time was subtracted from the Y_C peak time (i.e. Y_C − Y_A) for each cell pair and then the results were averaged (same for zero-crossing, rebound time, half-duration, and response offset). Biphasic index: it was calculated separately for each cell and then the Y_C/Y_A ratios were averaged for all cell pairs (same for receptive-field surround/center amplitude and spatial linearity). Receptive-field center size: a ratio was calculated for each cell pair (Y_C RF center size/Y_A RF center size) and then the results were averaged (same for RF surround size and response gain). The receptive-field size ratio was obtained from the DoG fits.

^***P < 0.001;

^**P < 0.01;

^*P < 0.05, Wilcoxon signed-rank test.