Cognitive function—choice reaction time
hypoxia
HYPOXIA
The Visual Choice Reaction Time Apparatus (Model 63035A, Lafayette Instrument Company, Indiana, USA) with a four-choice compatible stimulus–response paradigm was used to measure cognitive performance. Three visual stimuli (lights turning on) were manually given to the participants, and they were instructed to respond as quickly as possible by pushing the corresponding button on the response panel. The reaction time in each stimulation was recorded and the mean value of 3 efforts was calculated. The CRT was performed at the beginning of each experimental session in normoxia, after the prolonged cognitive effort, and during and after TTE in hypoxia.