Table 2.
Cell and synaptic characteristics of DiI(+) type I and type II DMX neurons
| DiI(+) DMX neuron | p value | ||
|---|---|---|---|
| Type I | Type II | ||
| Longitudinal soma size (μm) | 29.3 ± 1.3 (21) | NS1 | |
| 29.2 ± 1.4 (17) | 30.0 ± 4.6 (4) | NS2 | |
| Resting membrane potential (mV) | -60.0 ± 1.1 (20) | NS1 | |
| -60.6 ± 1.3 (16) | -57.75 ± 1.5 (4) | NS2 | |
| Cell capacitance (pF) | 26.8 ± 1.8 (21) | NS1 | |
| 27.3 ± 2.2 (17) | 24.9 ± 3.0 (4) | NS2 | |
| Input resistance (MΩ) | 515.8 ± 59.0 (21) | <0.01* | |
| 559.9 ± 63.4 (17) | 328.0 ± 143.2 (4) | NS2 | |
| EPSC amplitude (pA) (submaximal stimulation) | 114.0 ± 17.4 (21) | <0.01* | |
| 110.4 ± 18.8 (17) | 129.2 ± 62.4 (4) | NS2 | |
| Decay time-constant (ms) | 8.5 ± 0.9 (21) | NS1 | |
| 7.7 ± 0.5 (17) | 12.2 ± 1.0 (4) | NS2 | |
| Time-to-peak (ms) | 9.9 ± 0.6 (21) | NS1 | |
| 9.3 ± 0.4 (17) | 12.6 ± 0.2 (4) | NS2 | |
Data are expressed as mean ± SEM. Numbers in parentheses indicate the number of neurons. NS1, the distribution of the values obtained from whole DiI(+) neurons was not significantly (p > 0.05) different from that from whole DMX neurons that were recorded without preceding retrograde labeling (Kolmogrov-Smirnov test). *, significantly different from the distribution of the values from whole DMX neurons. NS2, not significantly different between type I DMX and type II DMX neurons (p > 0.05).