Table 3.
Comparison of unitary EPSP and IPSP amplitudes in previous cortical studies
| Preparation | Location | Mean (range) μV | Study |
|---|---|---|---|
| EPSP | |||
| Cat | Motor cortex | 111 (30–390) | Kang et al., 1988 |
| Cat* | Visual cortex | 132 (60–210) | Komatsu et al., 1988 |
| Cat* | Visual cortex | 550 (50–2080) | Mason et al., 1991 |
| Rat* | Sensorimotor | 410 (79–2300) | Thomson et al., 1988 |
| Guinea pig* | Hippocampus | 131 (30–665) | Sayer et al., 1990 |
| Monkey | Motor cortex | 226 (75–525) | Present study |
| IPSP | |||
| Cat* | Visual cortex | 90 ± 50 | Komatsu et al., 1988 |
| Guinea pig* | Hippocampus | 1300–3100 | Miles et al., 1984 |
| Monkey | Motor cortex | 274 (56–641) | Present study |
In vitro preparations are indicated by anasterisk.