Making Physiology Happen


Nerve Velocity & Hand Dominance

Cerebral dominance, left vs right hemisphere, affects speech, handedness, facial recognition, and many other physiologic parameters. It is also thought that lateralization of nerve conduction velocity is expected. Nerve conduction velocity is only a physiological measure, and does not involve any cognitive processing of the speed with which the electrical impulses are transmitted along the peripheral nerve fibers. The conduction velocity of the nerve depends on anatomical factors such as fiber diameter, degree of myelination and internodal distance. Other factors such as age, temperature, height, gender and limb are also well known physiological variables affecting nerve conduction velocity.


The effect of handedness on nerve conduction has not been fully studied and this lab aims to draw some conclusion to this question: Does the dominant limb have both faster reaction time and faster nerve conduction velocity than the non-dominant limb?.

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