Table 2.
Onset, peak time and duration (all in seconds) of stimulation-induced changes in HbO (left) and SO2 (right).
| HbO | SO2 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Onset | Peak | Duration | n | Onset | Peak | Duration | n | ||
| Ipsi SP | Br | 4.8 ± 1.1 (‡) | 9.8 ± 0.9 | 15.6 ± 3.1 | 8 | 7.3 ± 1.6 | 13.8 ± 1.4 | 19.5 ± 3.6 | 10 |
| Pre | 4.6 ± 1.4 | 13.7 ± 2.6 | 17.4 ± 4.0 | 9 | 5.0 ± 1.0 | 13.7 ± 2.6 | 17.2 ± 3.7 | 9 | |
| Pch | 4.0 ± 1.0 (‡) | 10.0 ± 1.1 | 15.6 ± 3.3 | 8 | 3.5 ± 0.5 | 13.1 ± 1.8 | 19.8 ± 3.2 | 8 | |
| 5V | 3.2 ± 0.7 (‡) | 10.8 ± 0.9 (†) | 23.5 ± 4.1 (†) | 10 | 4.2 ± 0.7 (‡†) | 12.3 ± 0.8 (†) | 30.8 ± 4.5 (†) | 10 | |
| 10V | 4.0 ± 1.0 (‡) | 11.5 ± 0.9 (†) | 29.2 ± 3.8 (†) | 10 | 2.8 ± 0.5 (‡) | 11.0 ± 0.4 (†) | 35.3 ± 3.8 (†) | 10 | |
| 15V | 3.8 ± 1.5 | 12.3 ± 1.1 (†) | 33.7 ± 5.2 (†) | 10 | 4.2 ± 1.5 (‡†) | 13.3 ± 1.0 (†) | 30.7 ± 6.2 (†) | 10 | |
| Cont SI | Br | 2.2 ± 1.5 | 5.0 ± 1.9 | 15.0 ± 13.3 | 3 | 3.3 ± 1.7 | 3.3 ± 1.7 | 2.5 ± 0.8 | 2 |
| Pre | 5.0 ± 3.3 | 5.0 ± 3.3 | 1.7 ± 0 | 2 | 8.3 | 8.3 | 1.7 | 1 | |
| Pch | 4.2 ± 4.2 | 6.7 ± 1.7 | 4.2 ± 2.5 | 2 | 2.8 ± 2.8 | 4.4 ± 2.4 | 3.3 ± 1.7 | 3 | |
| 5V | 1.9 ± 0.8 | 4.1 ± 1.1 | ± 2.1 | 7 | 1.1 ± 0.6 (‡) | 4.4 ± 1.2 | 9.2 ± 2.3 | 6 | |
| 10V | 3.3 ± 0.7 (‡) | 4.8 ± 0.7 | 4.5 ± 1.6 | 7 | 2.5 ± 0.5 | 4.0 ± 0.6 | 5.8 ± 1.7 | 8 | |
| 15V | 2.9 ± 0.9 | 5.4 ± 0.8 | 13.8 ± 4.6 | 8 | 1.9 ± 0.5 (‡) | 3.7 ± 0.2 | 10.4 ± 2.1 | 9 | |
| Ipsi SI | Br | 23.8 ± 6.2 | 38.3 ± 9.1 | 19.0 ± 8.7 | 8 | 15.3 ± 7.3 | 33.1 ± 12.3 | 22.8 ± 10.8 | 6 |
| Pre | 9.8 ± 3.1 | 21.9 ± 9.8 | 19.5 ± 9.1 | 7 | 13.7 ± 9.7 | 33.0 ± 13.4 | 24.0 ± 15.9 | 5 | |
| Pch | 27.4 ± 9.5 | 47.6 ± 8.4 | 18.8 ± 5.6 | 7 | 22.8 ± 8.5 | 52.5 ± 12.7 | 32.8 ± 11.6 | 6 | |
| 5V | 20.2 ± 8.8 | 30.5 ± 6.7 | 21.4 ± 12.1 | 7 | 23.3 ± 6.5 | 35.4 ± 5.8 | 16.3 ± 9.5 | 8 | |
| 10V | 15.0 ± 4.4 | 33.0 ± 5.4 | 26.5 ± 5.9 | 9 | 15.6 ± 5.2 | 26.7 ± 6.4 | 13.2 ± 4.0 | 9 | |
| 15V | 7.6 ± 2.6 | 23.5 ± 7.5 | 21.7 ± 8.8 | 9 | 18.5 ± 6.1 | 29.8 ± 6.2 | 31.3 ± 9.8 | 8 | |
Onset: the first time point since stimulation start when Z-score (HbO or SO2 divided by the standard deviation of 20-s baseline) > 1.96. Peak: the time point of the maximum since stimulation start. Duration: the period between the onset and the first time point when Z-score < 1.96. Sample size (n): number of rats with a valid onset. †: p < 0.05 between the ipsilateral spinal cord and the contralateral SI; ‡: p < 0.05 between the ipsilateral SI and the ipsilateral spinal cord (or the contralateral SI).