Question

The typical range for EMG is

• A. \( \text{0 - 1 mV} \)
• B. \( \text{1 - 5 mV} \)
• C. \( \text{0 - 0.1 mV} \)
• D. \( \text{0.1 - 0.5 mV} \)

Hint:

The amplitude of EMG signals is highly variable. When interpreting EMG readings, it's crucial to consider the measurement setup, the muscle being studied, and the level of muscle activation. Different types of electrodes (surface vs. needle) also yield different amplitude ranges. Surface electrodes typically record larger, composite signals, while needle electrodes can isolate individual motor unit action potentials.

Answer 1

The Correct Option is D

Electromyography (EMG) is a diagnostic procedure to assess the health of muscles and the nerve cells that control them. The typical range for EMG signals is important to understand for interpreting EMG results. EMG signals are usually in the range of:

Typical EMG Range

0.1 - 0.5 mV

This range corresponds to the typical electrical activity recorded from muscle fibers during contraction. Among the given options, the correct typical range for EMG is 0.1 - 0.5 mV.