Version 1.9 Page 63 of 170
4.2.2.3 REACTION TIMES
Main Parameters
Start type: Indicates what type of reaction the test must assess, that is:
o “Visual stimulus”: on the PC screen a red circle becomes green after a random
period of time; the patient must ‘react’ to this stimulus (e.g., by jumping)
o “Acoustic stimulus”: the reaction stimulus is a sound emitted by the PC (using
either an internal loudspeaker or a sound board) after a random period of time.
o “Visual-Acoustic stimulus”: the visual (red/green circle) and the acoustic stimuli
(beep from the PC) alternate randomly
o “External impulse”: the start to calculate the reaction time is given by a device
(e.g. a start horn or a start button) connected to the jack sockets
Start: indicates if at the beginning of the test the patient must be ‘inside the area’ of the
bars or ‘outside the area’
Minimum pause: minimum pause time in minutes:seconds between one test and another
(the pause will have this minimum value, but, being random, it will almost always be longer)
Number of repetitions: indicates how many repetitions (from 1 to 99) the test must consist
of
Sequence type: the sequence can be ‘Automatic’ (the test repetitions follow each other
automatically) or ‘Manual’ (at the end of each repetition the start of the next test must be
confirmed)
Stop type: this can only happen by ‘Status change’
Secondary Parameters
Minimum contact time [ms]: see above
Minimum flight time [ms]: see above
Maximum flight time [ms]: see above
Reaction time range [ms]: indicates the time frame in milliseconds within which the
reaction signal must be given randomly.
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