Table 3.

Parameters of rod ERG recordings

	unit	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 Fig. 7 B. I_R and k are parameters obtained from the fit with eqn. (2) in Fig. 7A.