electromyogram

This term refers specifically to the resulting record or visual representation of electrical activity, whereas an electromyograph refers to the instrument used to create that record. It is a technical medical term used primarily in neurology and physiatry to diagnose neuromuscular disorders.

In clinical settings, the term is often shortened to EMG. While the full word is used in formal medical reports, the abbreviation is more common in both professional conversation and patient communication.