Table 2.
Properties of EPSC/P in hippocampal oriens/pyramidale interneurones and pyramidal cells
| Cell type | O-LM (n = 8) | Trilaminar (n = 6) | Basket (n = 6) | Bistratified (n = 3) | Pyramid (n = 6) |
|---|---|---|---|---|---|
| Values are means ± s.e.m. *Significant differences in the values of fast spiking interneurones versus O-LM cells (t test). | |||||
| Spontaneous EPSP | |||||
| Amplitude (mV) | 2.0 ± 0.1 | 2.9 ± 0.1* | 2.4 ± 0.2 | 2.4 ± 0.2 | 1.7 ± 0.3 |
| 10–90% rise time (ms) | 1.6 ± 0.4 | 0.8 ± 0.1* | 1.2 ± 0.2 | 1.1 ± 0.1 | 3.8 ± 0.7 |
| Decay time constant (ms) | 5.9 ± 0.8 | 3.9 ± 0.2* | 4.1 ± 0.5* | 4.4 ± 0.2* | 8.8 ± 1.6 |
| Spontaneous EPSC | |||||
| Amplitude (pA) | 37.5 ± 1.2 | 72.3 ± 4.4* | 71.1 ± 7.2* | 39.9 ± 5.3 | 37.9 ± 8.6 |
| 10–90% rise time (ms) | 0.84 ± 0.10 | 0.48 ± 0.02* | 0.54 ± 0.02* | 0.56 ± 0.05* | 1.45 ± 0.13 |
| Decay time constant (ms) | 2.58 ± 0.09 | 1.65 ± 0.09* | 1.62 ± 0.25* | 1.38 ± 0.17* | 4.62 ± 0.64 |
| Kainate-evoked individual EPSC | |||||
| Amplitude (pA) | 54.3 ± 1.7 | 150.2 ± 8.9* | 115.2 ± 18.7* | 94.1 ± 4.3* | 42.3 ± 9.1 |
| 10–90% rise time (ms) | 0.84 ± 0.09 | 0.53 ± 0.05* | 0.60 ± 0.04* | 0.60 ± 0.06* | 1.50 ± 0.15 |
| Decay time constant (ms) | 2.52 ± 0.20 | 1.40 ± 0.23* | 1.50 ± 0.15* | 1.43 ± 0.02* | 4.68 ± 0.83 |
| Inter-event interval (ms) | 3.30 ± 0.15 | 3.22 ± 0.20 | 4.22 ± 0.21* | 4.59 ± 0.21* | 9.7 ± 1.9 |
| Kainate-evoked compound EPSC | |||||
| Frequency peak (Hz) | 32.9 ± 2.1 | 31.4 ± 2.2 | 33.3 ± 3.1 | 35.1 ± 3.3 | 31.3 ± 3.4 |
| Peak power (nA2Hz−1) | 0.011 ± 0.01 | 0.046 ± 0.02* | 0.041 ± 0.02* | 0.035 ± 0.02* | 0.008 ± 0.02 |