Effect of foreperiod duration and dominant hand on simple and choice auditory reaction time

Preparation is the time following the receipt ofa warning signal during which the motor system is activated prior to action and prepares the individual for performance. We investigate the impact of the effect of various foreperiods (0/5, 1/5, 2/5 and 3/5 seconds) also the handedness ofthe athletes upon the time of simple and choice auditory reaction time.

The current research followed a semi-empirical methodology andwas carried out using a self-made software. The statistical population was comprised of the female students of Shahid Chamran University, of which 40 was selected through purposive sampling and classified intwo groups of right-handed and left-handed. Each individual was randomly tested for simple and selective reaction with randomly chosen pre-periods.

The findings demonstrated that short (0/5 seconds) and long (3/5 seconds) foreperiods will result in the increase of reaction time, and that left-handed individuals are associated with shorter reaction times compared to their right-handed counterparts.

In left-handed, the dominance ofthe right hemisphere which contains higher numbers of neurons might have lower reaction times compared to the right-handed individuals. Additionally, we recommend that pre-periods with too short or too long durations be avoided when preparing the individuals fordifferent motor skills.