Table of Contents

2016 Month : December Volume : 2 Issue : 2 Page : 3-5

EFFECT OF LIMB DOMINANCE ON PERIPHERAL SENSORY NERVE CONDUCTION VELOCITY.

Soumya B. A1, Vikas A. Reddy2, D. V. Deshpande3

Corresponding Author:
Dr. Soumya B. A,
Assistant Professor,
Department of Physiology,
S. S. Institute of Medical Sciences and Research Centre,
Davangere.
E-mail: soumya.ba@gmail.com

ABSTRACT

BACKGROUND

Nerve Conduction Study is a pure physiological measure of the speed with which the electrical impulses are transmitted along the peripheral nerve fibres and across synapses, involving no cognitive activity. Various anatomic and physiologic factors affecting the conduction velocity of the nerve are well studied except handedness, which could be the probable reason behind disproportionately large number of artists, musicians and mathematicians being left-handers. Hence, the study was undertaken to evaluate the Nerve Conduction Velocity taking handedness aspect into consideration.

 

MATERIALS AND METHODS

The study was done in accordance with the Institutional Ethical Committee standards. The study included 100 medical students (10 left handers and rest right handers) in the age group 17–21 years. Sensory Nerve Conduction Velocity (NCV) of median and ulnar nerves on both the sides were recorded using RMSEMGEPMK2 software Equipment. Stimulation was done using standard supramaximal technique using a square wave pulse of 0.1 ms duration, distance measured by metal tape and velocity calculated. Results were expressed as Mean ± S.D. For comparisons between the groups (right and left handers), Student’s unpaired ‘t’ test was used and a p value of less than 0.05 considered as significant.

RESULTS

Sensory nerve conduction velocities (in metres per second) of median and ulnar nerves of both the sides in left-handed individuals were higher compared to their right-handed counterparts. But this difference was significant in the ulnar nerve (p=0.012).

CONCLUSION

The study concludes that the left-handed individuals have faster sensory nerve conduction velocity compared to right handers.

KEYWORDS

Handedness, Nerve Conduction Velocity, Limb Dominance.

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