Table 3.
Lower refresh rates do not lead to consistent changes in peak firing time as a function of l/‖v‖
| Experiment | 200 Hz | 67 Hz | Difference | ||
|---|---|---|---|---|---|
| Slope α (mean ± SD) | Delay δ (msec) (mean ± SD) | Slope α (mean ± SD) | Delay δ (msec) (mean ± SD) | ||
| 12997 | 6.1 ± 0.5 | 28.4 ± 3.1 | 5.6 ± 0.2 | 27.8 ± 1.6 | No |
| 12997a | 4.1 ± 0.7 | 14.5 ± 6.5 | 4.7 ± 0.6 | 21.0 ± 6.5 | No |
| 121097 | 6.5 ± 0.6 | 43.2 ± 5.0 | 6.6 ± 0.5 | 47.8 ± 3.8 | No |
| 121197 | 3.0 ± 1.0 | 24.0 ± 10.8 | 5.4 ± 0.4 | 44.3 ± 3.8 | ↑ |
| 121197a | 5.7 ± 0.7 | 30.6 ± 6.5 | 4.1 ± 0.4 | 17.7 ± 2.8 | ↓ |
Parameters α and δ of Equation 5 are reported for five experiments at two refresh rates (200 and 67 Hz). Data points and straight line fits are shown in Figure 8B for experiment 121097. The last column indicates whether differences were observed between the values of α and δ at 200 and 67 Hz. No, SDs of both parameters measured at 67 and 200 Hz overlapped. Downward arrow, Decrease in peak time ‖tpeak‖ at lower refresh. Upward arrow, Increase in peak time at lower refresh.