Figure 4.
Figure 4. Exponential time course of flash decay. (A) Single-photon responses calculated from the squared mean and variance as in Chen et al. (2000) and Tsang et al. (2006). Traces give means of 41 WT rods (black), 21 GAPux rods (green), 18 GAPux;RKS561L rods (red), and 15 GAPux;Rv−/− rods (blue). Fits through data (solid curves) are exponential decay functions with values of the single time constant τREC of 254 ms (WT), 331 ms (GAPux), 193 ms (GAPux;RKS561L), and 174 ms (GAPux;Rv−/−). (B) Mean values of τREC as a function of flash intensity for 12 WT rods (black), 13 GAPux rods (green), 18 GAPux;RKS561L rods (red; only six rods were used for the lowest intensity data point), and 17 GAPux;Rv−/− rods (blue). Error bars are SEMs.

Exponential time course of flash decay. (A) Single-photon responses calculated from the squared mean and variance as in Chen et al. (2000) and Tsang et al. (2006). Traces give means of 41 WT rods (black), 21 GAPux rods (green), 18 GAPux;RKS561L rods (red), and 15 GAPux;Rv−/− rods (blue). Fits through data (solid curves) are exponential decay functions with values of the single time constant τREC of 254 ms (WT), 331 ms (GAPux), 193 ms (GAPux;RKS561L), and 174 ms (GAPux;Rv−/−). (B) Mean values of τREC as a function of flash intensity for 12 WT rods (black), 13 GAPux rods (green), 18 GAPux;RKS561L rods (red; only six rods were used for the lowest intensity data point), and 17 GAPux;Rv−/− rods (blue). Error bars are SEMs.

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