A test used to measure the electrical activity produced by muscle contraction.
a test to evaluate nerve and muscle function.
Electro myelo gram, a test of the electrical activity of the muscles. Sensing electrodes can be placed over any muscle, but are usually placed on the skin over the muscles under the jaw to detect upper airway muscle activity, on the rib cage to detect the contraction of the breathing muscles and on the legs of detect leg movements. They are also a helpful aid to the staging of sleep, and are useful in the diagnosis of excessive leg movements at night.
Abbreviation for an electromyograph. An examination of the nervous system which determines to what extent nerves and muscles have been irritated or damaged. The physician, usually a physiatrist, conducts this exam by placing small needles in various muscle groups of the affected area. A stimulus can be sent through the needle which evokes a response in the muscle. This response, recorded on a graph, measures any changes to the nerves. New and old damage can be separated and the exact nerves affected can often be identified.
The recording, by means of fine needles inserted into muscles, of electrical currents generated into the muscles. This is used in the diagnosis of muscle and nerve disorders.