![]() ![]() An EMG specialist can examine the data produced by the second electrode to chart any irregularities in the current’s path. The first electrode generates an electrical current that travel down the nerves, while the second records the current’s progress. Nerve conduction studies are generally performed by applying electrodes to the skin. The patient may be asked to contract and relax muscles while the needles are inserted to promote the flow of the current. These impulses, transmitted by motor neurons, are used to control muscle relaxation and contraction. Pinched nerves (radiculopathy) or nerve compressionĪn EMG test is usually performed by directly inserting an electrode needle into a muscle and recording electrical impulses.Diseases of muscle nerve roots, such as myasthenia gravis. ![]()
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