FIG. 2.

Effect of incremental ascent to high altitude on middle and anterior cerebral artery hemodynamics at rest and during cognitive activity (Stroop task). p-value (partial-η²); partial-η² quantifies effect size and portion of variance accounted for by a specific main/interaction effect. ^{^}p-values represent transformed data to meet normality assumptions. (A) Altitude: 0.046 (0.4), Stroop: 0.01 (0.6), altitude-by-Stroop: 0.71 (0.0).^{^} (B) Altitude: 0.01 (0.6), Stroop: 0.07 (0.4), altitude-by-Stroop: 0.14 (0.2). (C) Altitude: 0.57 (0.1), Stroop: 0.01 (0.6), altitude-by-Stroop: 0.75 (0.1).^{^} (D) Altitude: 0.93 (0.0), Stroop: 0.02 (0.6), altitude-by-Stroop: 0.95 (0.0). ^‡p < 0.05 altitude effect, p < 0.05 versus 1400 m.