Reaction test of alertness
RTA, alertness
RTA
To assess tonic (intrinsic) attention and arousal regulation the reaction test of alertness (RTA), version 31 of the Vienna Test System (VTS) (Schuhfried, The following variables were assessed: MRT as a measure of tonic attention/arousal regulation (MRT‐ton), intraindividual coefficient of variation of RT (ICV RT; %) as a measure of the intraindividual variability of arousal regulation, and a number of omission errors. The following incorrect responses were identified by VTS software and not included in calculations of the variables: (i) concurrent pressing of the home button and the response button with two different fingers; (ii) use of a finger other than the index finger to press the response button, indicated by an interval of <50 ms between taking the index finger off the home button and pressing the response button; (iii) taking the finger off the home button before the appearance of the stimulus. Excellent reliability, 