Simple reaction time of hands and feet was studied in normal subjects (47 males, and 17 females) to visual and auditory stimuli using an electric circuit and recording points of stimulus and action on a fast moving kymograph. There are significant differences between reaction times of hands and feet, right side and left side, males and females and between auditory and visual reaction times (ART and VRT). Both VRT and ART were significantly faster in hands. Delayed response of left side (LH and LF), was more marked in feet with ART. On crossing hands, both VRT and ART took more time in RH. Males responded faster than females, difference being significant mainly in ART and that too on left side. ART was slightly faster than VRT. Faster response of right side was probably due to the fact that all the subjects were right handed persons.