Fig. 2
From: Normobaric hypoxia overnight impairs cognitive reaction time

Changes in reaction time and its components, cognitive- and motoric reaction time over the three testing altitudes. Cognitive reaction time is prolonged with increasing altitude. Significant changes have been marked as follows (*p < 0.05; **p < 0.025). Data is displayed as medians with standard deviation; reaction time and its components are displayed in seconds (s) and altitude in simulated meters a.s.l (m)