n | Number of Silent Cells | Number of Active Cells | Threshold, mV | Overshoot, mV | Amplitude, mV | Duration, ms | Input Resistance, MΩ | |
---|---|---|---|---|---|---|---|---|
Non TH | 31 | 9 (29) | 22 (71) | −45.1 ± 3.5 | 34.7 ± 6.3 | 79.8 ± 6.5 | 2.5 ± 0.6 | 600 ± 147 |
TH | 17 | 5 (29) | 12 (71) | −43.8 ± 3.6 | 34.9 ± 9.0 | 78.5 ± 8.7 | 2.7 ± 0.6 | 640 ± 199 |
Opioid-sensitive | 33 | 9 (27) | 26 (73) | −44.5 ± 3.8 | 36.7 ± 6.6* | 81.2 ± 6.9** | 2.5 ± 0.6 | 632 ± 175 |
Opioid-insensitive | 15 | 5 (33) | 10 (67) | −44.8 ± 3.0 | 30.5 ± 7.2* | 75.3 ± 7.3** | 2.7 ± 0.8 | 575 ± 143 |
All neurons | 48 | 14 (29) | 34 (71) | −44.6 ± 3.5 | 34.7 ± 7.3 | 79.3 ± 7.3 | 2.6 ± 0.6 | 615 ± 160 |
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Values are means ± SE. Parentheses enclose percentages. Values with asterisks (* and **) indicate a significant difference using unpaired t-test (level P > 0.01). TH, tyrosine hydroxylase; RVL, rostral ventrolateral medulla.