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Spatial dependence of BOLD fMRI percent changes due to oxygen inhalation (mean ± SD, N = 10 trials). There was no significant difference between any two regions from 3 to 9 (P > 0.05 by Tukey Honestly Significant Difference). There were significant differences between region 1, 2, or 11 and any region from 4 to 9 (P < 0.05 by Tukey Honestly Significant Difference). * indicates statistical significance.
