Table 3.

Parameters of rod ERG recordings

	Control rods (n = 10)	GCAPs−/− rods (n = 7)
Io (photons μm−2)	19 ± 3	11 ± 1
Rmax (μV)	89 ± 9	83 ± 9
Time-to-peak (ms)	163 ± 5	389 ± 11
Integration time (ms)	336 ± 33	1025 ± 39
SFD (photons−1 μm2)	2.6E-02 ± 3.1E-03	9.1E-02 ± 2.0E-02
IS (photons μm−2 s−1)	272 ± 30	14 ± 3
IR (photons μm−2 s−1)	756 ± 92	27 ± 10
k	1.20 ± 0.07	1.29 ± 0.20

Mean ± SEM. S_F^D is a flash sensitivity in darkness. I_S is a background intensity, which gives half the flash sensitivity in Figure 7B. I_R and k are parameters obtained from the fit with Equation 2 in Figure 7A.