TABLE 1.Intrinsic membrane and firing parameters for OMP neurons and unidentified neurons
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| Unidentified Neurons | OMP Neurons | P-Value | |||||
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| n | n | ||||||
| Input resistance (MΩ) | 281 ± 23 | 112 | 143 ± 13 | 38 | 0.0002 | ||
| Spontaneous rate (spikes/s) | 11 ± 1 | 85 | 22 ± 3 | 29 | <0.0001 | ||
| Spike height (mV) | 53.3 ± 0.8 | 100 | 52.5 ± 1.2 | 36 | 0.81 | ||
| Spike width (ms) | 0.99 ± 0.02 | 100 | 0.72 ± 0.02 | 36 | <0.0001 | ||
| Spike rise time (ms) | 0.50 ± 0.01 | 100 | 0.40 ± 0.01 | 36 | <0.0001 | ||
| Spike fall time (ms) | 0.49 ± 0.01 | 100 | 0.32 ± 0.01 | 36 | <0.0001 | ||
| ADP (mV/ms) | –2.3 ± 0.04 | 100 | 1.5 ± 0.3 | 36 | <0.0001 | ||
| AHP (mV) | 21 ± 0.5 | 100 | 19.2 ± 0.5 | 36 | 0.09 | ||
| Firing response gain (spikes/s·nA–1) | 189 ± 9 | 111 | 196 ± 9 | 38 | 0.1296 | ||
| IF curve linearity (R2) | 0.988 ± 0.001 | 111 | 0.994 ± 0.001 | 38 | 0.006 | ||
| Maximum rate (spikes/s) | 180 ± 10 | 58 | 327 ± 15 | 37 | <0.0001 | ||
| Gain/Input resistance | 1.1 ± 0.09 | 109 | 1.65 ± 0.1 | 36 | <0.0001 | ||
| FRA ratio | 0.88 ± 0.01 | 108 | 0.89 ± 0.01 | 36 | 0.92 | ||
| PRF (spikes/s) | 16 ± 2 | 93 | 12 ± 1 | 36 | 0.89 | ||
| Phase at 0.25 Hz (deg) | 8.1 ± 1.0 | 25 | 4.3 ± 0.3 | 22 | 0.004 | ||
Averages and standard errors are provided for each of the properties measured in this study. AHP, afterhyperpolarization;
ADP, afterdepolarization; IF, current-firing; FRA, firing rate adaptation; PRF, post-inhibitory rebound firing; OMP, oculomotor
nucleus projecting