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Many of the nerves, especially of upper and lower limbs, are tested by stimulating them at multiple sites with a small harmless current mimicking the natural impulse, and recording from a muscle or over the skin by sticking ECG type electrodes. Any compression or damage to the nerve along its path is detected and its severity known. A tingling current like sensation is felt, which is absolutely harmless, and does not interfere with even pacemakers, and is easily tolerated by all age groups.
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examines which muscle is weak due to nerve problem or muscle disease. It involves inserting a very fine acupuncture type 27G sterile disposable needle and recording muscle activity, much like the ECG. Mild discomfort of the needle may be felt and there may be a slight oozing from the site. The international guidelines allow the test to be carried out even with high INR with precautions.
Involves stimulating the nerves at ankle or wrist and recording over spinal cord and skull (much like EEG) to know the integrity and conduction in the spinal and brain pathways.
