Table 3
Properties of L5 pyramidal subtypes in the somatosensory cortex
| Broad tufted (n = 3) | Slender tufted (n = 6) | Untufted (n = 6) | P | |
|---|---|---|---|---|
| Width apical tuft (μm) | 376 ± 46* | 129 ± 21**/* | 26 ± 18** | <0.01 |
| Width basal dendrites (μm) | 427 ± 42 | 356 ± 15 | 335 ± 26 | 0.11 |
| RMP (mV) | -64.3 ± 1.3 | -67.8 ± 1.2 | -69.1 ± 1.3 | 0.10 |
| Ratio ISI-1/ISI-9 | 0.46 ± 0.20 | 0.22 ± 0.05 | 0.05 ± 0.01 | 0.01 |
| Ratio ISI-2/ISI-9 | 1.00 ± 0.09 | 0.64 ± 0.08 | 0.56 ± 0.13 | 0.07 |
| Ratio ISI-3/ISI-9 | 0.99 ± 0.02 | 0.84 ± 0.03 | 0.88 ± 0.09 | 0.42 |
| Input resistance (MΩ) | 55 ± 11* | 146 ± 10 | 146 ± 28 | 0.04 |
| Time constant (ms) | 16.3 ± 1.1 | 22.1 ± 1.1 | 18.6 ± 2.0 | 0.10 |
| Rheobase (pA) | 370 ± 68* | 120 ± 8 | 130 ± 19 | <0.01 |
| Voltage sag (mV, 100 pA) | 28.7 ± 4.7 | 19.3 ± 3.0 | 21.5 ± 5.1 | 0.43 |
| Adenosine effect (mV) | -1.5 ± 05 | -4.8 ± 0.6 | -3.8 ± 0.7 | 0.03 |
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Note: Average ± SEM; RMP, resting membrane potential. P lists the results from the ANOVA test. For clarity, the results of the post hoc comparison of groups is only given (values in bold followed with asterisks) when a cell type is different from all other cell types.
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*P < 0.01.
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**P < 0.05.