Stimulus Velocity and Movement Distance as Determiners of Movement Velocity and Coincident Timing Accuracy

Abstract

Thirty right-handed subjects (J 5 males and 15 females) received trials on a timing task that required the completion of a ballistic arm movement coincident with the termination of a moving light pattern. Each subject performed 20 trials under each of nine possible combinations of movement distance and stimulus velocity. The results indicate that timing errors were inversely linked to stimulus velocity and were not related to movement distance. Movement velocity was associated more with variations in movement distance than with changes in stimulus velocity. Males responded with more accuracy and consistency than did females.