Pepperberg plots of the dominant time constant of recovery (τ
) for single cell recordings. By plotting saturation time at 75% recovery against the ln of photon density, the slope of a linear fit reveals the dominant time constant of recovery. Each point represents the average of WT n = 29 and tg n = 13 cells. WT, τD = 165 ± 1.4 ms and tg, τD = 209 ± 10 ms.