TABLE 2.Intrinsic subthreshold and firing physiological properties of basket cells in monkeys and rats
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Property | Monkey (n = 39) | Rat (n = 31) |
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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.