Fig 7. Errors and false starts on the PVT decrease following acclimatization.

Errors and false starts decreased over three days at high altitude, resulting in higher aggregate scores on day 3. Mean reaction times did not decrease significantly with acclimatization. Means and 95% confidence intervals are provided for each day. Asterisks indicate significant differences across days at p < 0.05 (*), p < 0.01 (**), and p < 0.001 (***).