TABLE I.
Time constants of recovery of sensitivity at the base and tip of the rod outer segment
| n | τb | τt | Tip/Base | |
| s | s | |||
| No whole cell, 50% bleach | 7 | 200 ± 30 | 680 ± 140 | 3.4 ± 0.29 |
| Whole cell (0 mM NADPH), 50% bleach | 5 | 290 ± 20 | 860 ± 80 | 3.1 ± 0.29a |
| Whole cell (1.66 mM NADPH), 50% bleach | 4 | 220 ± 30 | 640 ± 110 | 3.1 ± 0.45 |
| Whole cell (5 mM NADPH), 50% bleach | 5 | 280 ± 50 | 330 ± 60 | 1.2 ± 0.04a |
| No whole cell, 90% bleach | 5 | 210 ± 40 | — | — |
The mean time constant at the base of the outer segment (τb) and the tip of the outer segment (τt), and the tip/base time constant ratio are reported. All values are mean ± SEM for a number of cells, n.
a
Student’s t test demonstrates a statistically significant difference between whole cell control solution (0 mM NADPH) and whole cell (5 mM NADPH); P < 0.005.