Cs+-induced rhythmic discharges observed from hippocampal CA1 interneurons
| O/A | SR | LM | SP | |
|---|---|---|---|---|
| Fraction of rhythmically discharging interneurons | 14/25 | 5/9 | 3/5 | 0/5 |
| Resting membrane potential (mV) | −54.1 ± 1.3 | −50.3 ± 2.6 | −50.7 ± 8.4 | −53.2 ± 3.5 |
| Frequency of rhythmic discharges (Hz) | 0.52 ± 0.06 | 0.48 ± 0.17 | 0.51 ± 0.08 |
All measurements were collected after Cs+ perfusion for 8–10 min at 33°C. O/A, Oriens/alveus; SR, striatum radiatum; LM, lacunosom moleculare; SP, stratum pyramidale. Perfusion of slices with 5 mm Cs+ induced no spontaneous discharges in the SP interneurons that were examined.