A nerve conduction study (NCS) is a test commonly used to evaluate the function, especially the ability of electrical conduction, of the motor and sensory nerves of the human body

Nerve conduction studies are used mainly for evaluation of paraesthesias (numbness, tingling, burning) and/or weakness of the arms and legs. The type of study is determined by the problem. Some of the common disorders which can be diagnosed by nerve conduction studies are: