Table 1: Results of the “alertness” test (two conditions).

ParameterStudy group ()Control group () value
MeanSDMeanSD

Condition I: without cue (ms)304.651.8228.431.7≤0.001
Condition II: with cue (ms)278.444.3226.633.7≤0.001

Measurement of reaction time for stimulus not preceded by a cue stimulus presented as warning tone; measurement of reaction time for stimulus preceded by a cue stimulus presented as warning tone.