Which test measures the electrical activity of the muscles and the speed of nerve conduction?

Which test measures the electrical activity of the muscles and the speed of nerve conduction?

• A. Electroencephalography (EEG)
• B. Magnetic Resonance Imaging (MRI)
• C. Electromyography (EMG)
• D. Positron Emission Tomography (PET)

Answer: (C)

Electrical activity of muscles is what electromyography (EMG) measures. During an EMG, electrodes detect the electrical signals muscle fibers produce in response to nerve input, revealing how well the muscles are being activated. In many evaluations, EMG is paired with nerve conduction studies, which stimulate a nerve and measure how fast the impulse travels, providing the speed of nerve conduction. The other tests focus on brain activity (electroencephalography), structural anatomy (MRI), or metabolic activity (PET), not the electrical signals from muscles or nerve conduction. So EMG is the test that best fits measuring muscle electrical activity and, with nerve conduction studies, the speed of nerve conduction.

Electrical activity of muscles is what electromyography (EMG) measures. During an EMG, electrodes detect the electrical signals muscle fibers produce in response to nerve input, revealing how well the muscles are being activated. In many evaluations, EMG is paired with nerve conduction studies, which stimulate a nerve and measure how fast the impulse travels, providing the speed of nerve conduction. The other tests focus on brain activity (electroencephalography), structural anatomy (MRI), or metabolic activity (PET), not the electrical signals from muscles or nerve conduction. So EMG is the test that best fits measuring muscle electrical activity and, with nerve conduction studies, the speed of nerve conduction.