Changes on the E–I ratio of the frequency, amplitude, and charge of spontaneous EPSCs and IPSCs in 3 versus 1 mm extracellular Ca2+
| 3 mm Ca2+ | 1 mm Ca2+ | |
|---|---|---|
| Pyramidal cells | ||
| Frequency | 0.71 ± 0.23 | 13.76 ± 10.53* |
| Amplitude | 0.91 ± 0.21 | 1.78 ± 0.31* |
| Charge | 0.77 ± 0.25 | 2.48 ± 0.66* |
| n | 6 | 6 |
| Interneurons | ||
| Frequency | 5.64 ± 4.07 | 35.75 ± 17.09* |
| Amplitude | 1.79 ± 0.59 | 2.53 ± 1.01 |
| Charge | 1.19 ± 0.48 | 1.71 ± 1.19 |
| n | 6 | 4 |
Experiments were performed with standard pipette solution (see Materials and methods), and events were detected at −60 mV.
↵*p < 0.05 for statistical comparisons between different calcium concentrations.