Table 3.
Properties of CA1 neurons
| A. | Pyramidal cells | Interneurons | Statistics |
|---|---|---|---|
| Vrest (mV) | −64.5 ± 1.3 (n= 17) | −66.2 ± 2.2 (n= 17) | |
| AP threshold (mV) | −53.2 ± 2.1 (n= 17) | −55.4 ± 1.9 (n= 17) | |
| t(EPSP,onset) | 2.9 ± 0.3 (n= 17) | 2.7 ± 0.5 (n= 17) | |
| EPSP slope (mV ms−1) | 1.6 ± 0.4 (n= 17) | 4.0 ± 0.7 (n= 17) | * |
| τm (ms) | 21.1 ± 1.2 (n= 17) | 16.2 ± 1.5 (n= 17) | * |
| Rin | 53.3 ± 7.7 (n= 17) | 96.9 ± 10.7(n= 17) | * |
| B. | I cells (n= 28) | Basket cells (n= 15) | Axo-axonic cells (n= 6) | Bistratified cells (n= 7) |
|---|---|---|---|---|
| t(EPSP,onset) | 2.7 ± 0.3 | 2.8 ± 0.5 | 2.4 ± 0.6 | 2.7 ± 0.4 |
| t(EPSP,peak) | 5.6 ± 0.5 | 5.8 ± 0.7 | 5.0 ± 1.1 | 5.9 ± 0.6 |
| t(AP,onset) | 5.3 ± 0.3 | 5.7 ± 0.9 | 4.8 ± 1.2 | 5.2 ± 0.5 |
| t(AP,peak) | 5.8 ± 0.3 | 6.1 ± 0.7 | 5.2 ± 1.0 | 5.8 ± 0.7 |
A, properties of pyramidal cells and stratum pyramidale interneurons recorded simultaneously. B, activation kinetics in CA1 stratum pyramidale interneurons (total, n= 28; and various subtypes).
*
indicates significant difference between pyramidal cell and interneuron values (P < 0.05, Student's t test).