Table 1.

Coherence rates of individual cells

Cell type (number of cells)Rexp(bits/sec)Rcoh (bits/sec)Average Rcoh/ Rexp
Laboratory environment
 MC on-center (5)51  ± 17m18  ± 20.17  ± 0.04
m224  ± 80.48  ± 0.10
m333  ± 120.65  ± 0.13
 MC off-center (4)50  ± 20m17  ± 20.14  ± 0.04
m223  ± 60.47  ± 0.12
m332  ± 80.68  ± 0.17
 +L−M on-center (5)13  ± 3m14  ± 20.33  ± 0.17
m29  ± 30.66  ± 0.21
m312  ± 40.96  ± 0.21
 −L+M off-center (2)5  ± 1 5 ± 10.91
 +M−L on-center (5)14  ± 510 ± 50.74  ± 0.14
 −M+L off-center (1) 9 8    0.91
 +S−ML (4)27  ± 1014 ± 30.53  ± 0.10
Flower show
 MC on-center (3)108  ± 6m121  ± 20.19  ± 0.01
m249  ± 20.45  ± 0.01
m371  ± 30.66  ± 0.04
 MC off-center (1) 74m117  ± 10.23  ± 0.01
m237  ± 40.51  ± 0.05
m348  ± 10.65  ± 0.02
 +L−M on-center (3)46  ± 7m124  ± 40.53  ± 0.06
m227  ± 40.59  ± 0.06
m339  ± 50.85  ± 0.06
 −L+M off-center (2)23  ± 421 ± 20.90  ± 0.05
 +M−L on-center (1) 4537 ± 20.81  ± 0.03
 −M+L off-center (2)25  ± 117 ± 30.68  ± 0.13
 +S−ML (3)55  ± 2624 ± 60.47  ± 0.10
  • For the MC cells, m1 is a linear model; m2 is a model containing a low-pass filter (LP1 in Fig. 7A), a fixed high-pass filter (fixed q in Fig. 7A), a compressive nonlinearity (NL2 in Fig. 7A), and a rectification; m3 is the full model of Figure7A. For the on-center +L−M cell, m1 is a linear model; m2 is a model containing a weighted subtraction ofl and m; and m3 is the full model of Figure 7B. For the other M, L-cells, the model is given in Figure 7B; for the +S−ML cell the model is given in Figure7C. Numbers show mean and SD. Fits were made separately for each cell.