A Comparative Study Of Nerve Conduction Velocity Between Left And Right Handed Subjects.

Abstract

Background & objectives: Nerve conduction velocity is being used as a widespread measure of diagnosis of nerve function abnormalities. Dependence of nerve conduction parameters on intrinsic factors like age and sex, as well as extrinsic factors like temperature is well known. Lateralization of various cerebral functions like speech, language, visuospatial relations, analysis of face, recognition of musical themes and use of hand for fine motor movements have also been studied. Some differences have been noted between left and right hander for nerve conduction. The aim of this study is to compare the nerve conduction velocity between left handed and right handed subjects using median nerve and find out whether there is any difference in nerve conduction velocity (motor or sensory) with handedness.

Method: The study was carried out in students of B J Medical College by the use of standard 2 channel physiograph. Comparison of motor and sensory nerve conduction velocity between left and right handed subjects was done under paired-t test.

Results: Hemispheric specialization is primarily responsible for difference of dexterity. Some skills like music, sports activities are also due to hemispheric difference. On comparison of nerve conduction velocity between left and right handed persons the study shows that there is significant difference in sensory nerve conduction velocity between left and right handed subjects.

Interpretation & conclusion: From the results we can conclude that there should be different set of standards for sensory nerve conduction velocity of left and right handed subjects.