Abstract
The purpose of the present study was to determine whether lateral differences were found in tactile perception of letter of the alphabets and number of dots in normal subjects. The subjects were divided into 80 pure right-handed men and the other 10 men by handedness questionnaires. The stimulus was presented to the left or right index finger by active touch. The subjects were required to determine the letter or number of dots that they felt. The result showed that tactile perception of letters and numbers of dots was significantly more accurate with the left hand than with the right hand in pure right-handed group. It was more noticeable with letters. The reverse trend was found in the other group. These results suggested that the letters of the alphabet were processed as figures by the right cerebral hemisphere in the pure right-handed subjects.
