TABLE 2. Comparison of All Bursting and Nonbursting HEGCs Analyzed.
| Bursting | Nonbursting | |
|---|---|---|
| Total dendritic length (μm) |
1256 (1 19–3171)** | 2874 (1985–5226) |
| Total branching (# of branch points) |
5 (2–17)** | 15 (10–19) |
| Dendritic length in hilus (μm) |
420 (48–1356) | 361 (17–1013) |
| % of apical dendritic length in hilus |
59 (1–100) | 33 (1–100) |
| % of total dendritic length in hilus |
55 (1–100) | 25 (1–100) |
| Resting Vm (mV) | −66 ± 2 | −71 ± 2 |
| Input resistance (MΩ) | 314 ± 31 | 249 ± 26 |
Morphological data were obtained from Scholl analysis of HEGCs labeled by intracellular dialysis with biocytin during whole cell patch clamp recording. Values are expressed as medians and (range) for 17 bursting and 7 nonbursting HEGCs.
**
P <0.025 compared to non-bursting HEGCs by Mann-Whitney rank sum test. During whole cell recordings, resting Vm was determined in current clamp mode immediately on break-in. During perforated patch recordings, resting Vm was determined in current clamp mode when the series resistance fell below 20 MΩ. Input resistance was deter mined from the current response to a 10-mV hyperpolarization from resting Vm applied for 200 ms. Values are expressed as means ± SEM for 18 bursting and 8 nonbursting HEGCs.