Atest to measure electrical activity across muscle membranes by means of electrodes that are attached to a needle inserted into the muscle is

The correct answer is EMG (Electromyography).

EMG is a diagnostic method that accesses the condition of muscles health and the nerve cells, which monitors them. These nerve cells are called motor neurons. They conduct electrical signals, which cause the muscles to relax and contract. An EMG converts these signals into numbers or graphs, helping the doctors to make a determination.

The test is used to determine the neuromuscular irregularities. At the time of this test, one or more small needles are administered through the skin into the muscles.

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