Table 2.
Distributions of Response to Each Stimuli Combination and Statistical Inferences Comparing Each Stimulus to the Baseline Air‐Only State
| Air only Mean ± SD | Air/Cb Mean ± SD (P‐value) | Ox/Cb Mean ± SD (P‐value) | |
|---|---|---|---|
| ‘Carbogen‐light’ (2%), n = 9 | |||
| Median correlation coefficient | 0.13 ± 0.03 | 0.14 ± 0.04 | 0.15 ± 0.05 |
| — | (0.19) | (0.08) | |
| Median signal deviation (%) | 0.77 ± 0.24 | 0.90 ± 0.28 | 0.96 ± 0.38 |
| (0.16) | (0.13) | ||
| Median RMS BOLD signal (%) | 0.29 ± 0.08 | 0.34 ± 0.13 | 0.34 ± 0.13 |
| — | (0.15) | (0.14) | |
| Percentage pixels activated (P < 0.05) | 38.4 ± 15.7 | 45.8 ± 16.1 | 47.2 ± 21.2 |
| — | (0.15) | (0.08) | |
| Carbogen (5%), n = 10 | |||
| Median correlation coefficient | 0.11 ± 0.02 | 0.13 ± 0.02 | 0.13 ± 0.02 |
| — | (0.10) | (0.04a) | |
| Median signal deviation (%) | 0.60 ± 0.16 | 0.68 ± 0.15 | 0.67 ± 0.15 |
| (0.13) | (0.11) | ||
| Median RMS BOLD signal | 0.21 ± 0.05 | 0.24 ± 0.06 | 0.25 ± 0.06 |
| — | (0.09) | (0.03a) | |
| Percentage pixels activated (P < 0.05) | 27.9 ± 13.6 | 39.2 ± 10.0 | 38.7 ± 12.5 |
| — | (0.10) | (0.04a) |
a
Significant P‐value.