2.2.1. Performance, Perceptual, and Cognitive Measure
cognitive efficiency
COLD, BRAIN
Performance was measured as the total (km) and vertical (m) distance recorded during the 20 min TT. Thermal sensation (TS) was rated on a 1–13 visual analogue scale anchored by the words “unbearably cold” at 1 and “unbearably hot” at 13, and with “neutral” associated with a value of 7 [Neurocognitive performance (reaction time, percent correct, and cognitive efficiency) was assessed using DANA Brain Vital through the following three tests:Simple Reaction Time: The participant tapped on a non-moving, circular target as quickly as possible each time it appeared on the screen over 40 trials.Procedural Reaction Time: The screen displayed one of four numbers (2, 3, 4, or 5) for two seconds. The participant tapped the left button (labelled “2 or 3”) or right button (labelled “4 or 5”) at the bottom of the screen as quickly as possible to indicate which number was displayed over 32 trials.Go–No Go: A house was presented on the screen with several windows. Either a “friend” (green character) or “foe” (grey character) appeared in a window. The participant tapped the screen only when a “foe” appeared over 30 trials.