title: The interference effect of simultaneous vocalization on manual reaction time.
abstract: Simple reaction times (RTs) of the left or right hand with or without simultaneous vocalization were examined in 14 right-handed subjects. RTs of the simultaneous tasks were longer than those of the single tasks and slowing of RT was larger on the manual than vocal response, particularly on the right side. The results are interpreted as reflecting a different mode of processing in the left and right hemispheres.
mesh_terms: D000328:Adult; D004292:Dominance, Cerebral; D005260:Female; D006801:Humans; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D011930:Reaction Time; D013060:Speech / Q000502:physiology*