Table 3.
Long-average firing rate (Hz) | Non-theta firing rate (Hz) | Theta firing rate (Hz) | Burst index | Symmetry index | Spike amplitude (μV) | Spike width (ms) | |
---|---|---|---|---|---|---|---|
Subiculum | |||||||
Bursting, n = 58 | 0.89 ± 0.11 | 0.88 ± 0.11 | 1.43 ± 0.19* | 0.7 ± 0.03 | 2.0 ± 0.1 | 150 ± 8 | 0.26 ± 0.01 |
0.02–3.24 | 0.02–3.23 | 0.03–6.03 | 0.2–1.0 | 1.1–3.4 | 82–352 | 0.15–0.46 | |
Regular spiking, n = 32 | 2.35 ± 0.14** | 2.34 ± 0.14 | 3.66 ± 0.27* | −0.4 ± 0.04 | 2.1 ± 0.1 | 169 ± 13 | 0.23 ± 0.01 |
0.44–3.80 | 0.44–3.85 | 0.72–6.27 | −0.8 to −0.1 | 1.7–2.7 | 86–363 | 0.15–0.43 | |
CA1 | |||||||
Bursting, n = 70 | 0.40 ± 0.06 | 0.40 ± 0.06 | 0.58 ± 0.08* | 0.9 ± 0.01 | 2.0 ± 0.04 | 189 ± 10 | 0.24 ± 0.01 |
0.04–3.18 | 0.04–3.17 | 0.00–3.89 | 0.6–1.0 | 1.4–3.0 | 66–565 | 0.15–0.36 | |
Regular spiking, n = 5 | 1.81 ± 0.63 | 1.80 ± 0.62 | 2.12 ± 0.92 | −0.4 ± 0.1 | 2.3 ± 0.1 | 240 ± 55 | 0.25 ± 0.03 |
0.33–3.50 | 0.34–3.49 | 0–4.60 | −0.7 to −0.2 | 1.8–2.5 | 103–403 | 0.15–0.30 | |
CA3 | |||||||
Bursting, n = 54 | 0.32 ± 0.03 | 0.33 ± 0.03 | 0.13 ± 0.02* | 0.9 ± 0.01 | 2.3 ± 0.1 | 173 ± 12 | 0.24 ± 0.01 |
0.02–0.86 | 0.09–0.87 | 0–0.78 | 0.8–1.0 | 1.7–3.1 | 61–495 | 0.15–0.30 | |
Regular spiking, n = 1 | 0.09 | 0.08 | 0.44 | −0.4 | 1.5 | 265 | 0.21 |
Dentate gyrus | |||||||
Bursting, n = 38 | 0.49 ± 0.10 | 0.49 ± 0.10 | 0.47 ± 0.12 | 0.6 ± 0.04 | 2.5 ± 0.1 | 121 ± 9 | 0.22 ± 0.01 |
0.04–3.04 | 0.04–3.05 | 0–3.49 | 0.1–1.0 | 1.5–5.2 | 71–340 | 0.15–0.30 | |
Regular spiking, n = 14 | 0.96 ± 0.17** | 0.95 ± 0.17 | 2.96 ± 0.68* | −0.5 ± 0.1 | 2.3 ± 0.3 | 121 ± 12 | 0.24 ± 0.01 |
0.08–2.04 | 0.08–2.04 | 0.30–8.44 | −0.9 to −0.04 | 1.2–4.4 | 77–230 | 0.18–0.30 |
Values indicate mean ± SEM and range.
*Theta versus non-theta firing rate (p < 0.01, paired t test or Wilcoxon's signed-rank test).
**Comparison of long-average firing rate of regular spiking versus bursting neurons within each subregion (p < 0.01, Mann–Whitney rank-sum test).