TABLE 2.
Intrinsic subthreshold and firing physiological properties of basket cells in monkeys and rats
| Property | Monkey (n = 39) | Rat (n = 31) |
|---|---|---|
| Resting membrane potential, mV | −68 ± 8 | −67 ± 6 |
| Spike threshold, mV | −41 ± 5*** | −34 ± 3 |
| Spike threshold, pA | 74 ± 50*** | 132 ± 69 |
| Spike amplitude, mV | 55 ± 11 | 52 ± 7 |
| Spike half-duration, ms | 0.34 ± 0.06* | 0.38 ± 0.08 |
| Spike 10–90% rise time, ms | 0.15 ± 0.03*** | 0.21 ± 0.04 |
| Spike 10–90% fall time, ms | 0.23 ± 0.06 | 0.25 ± 0.03 |
| First spike latency, ms | 71 ± 69*** | 220 ± 159 |
| Afterhyperpolarization amplitude, mV | 23 ± 8 | 24 ± 5 |
| Adaptation ratio coefficient | 0.90 ± 0.13 | 0.85 ± 0.12 |
| Number of spikes (20 pA above threshold) | 16 ± 5** | 11 ± 5 |
| CV of interspike intervals (20 pA above threshold) | 5.1 ± 2.2*** | 27 ± 26 |
| Input resistance, MΩ | 251 ± 130* | 182 ± 83 |
| Time constant, ms | 9.5 ± 2.8* | 7.7 ± 3.8 |
Values are means ± SD. Significantly different between the two species:
*
P < 0.05;
**
P < 0.01;
***
P < 0.001.