Updated Patient Visit Policy Effective April 30, 2020

To comply with the order of the Department of Health, all patients and visitors must now wear a cloth face covering, such as a fabric mask, scarf, or bandana, over their nose and mouth while of our physicians for appointments or surgery. Until further notice, all patients at OAL offices and facilities will not be permitted to have accompanying guests. The only exception will be for patients who are unable to complete the visit on their own, such as a parent or guardian accompanying a minor, in which one guest will be permitted. Any patient or guest who is sick, has a high risk of exposure or has traveled from a high-risk geographical area will not be permitted to enter any OAL offices or facilities.

Article Content Return To Library

Electromyography (EMG) - Nerve Test


Electromyography (EMG) is an electrodiagnostic test that measures the nerve impulses in muscles during contraction.  Nerves throughout the body exchange information with the brain through nerve impulses. Healthy muscles need nerve input to perform movements.  Doctors use EMG to identify muscle function as related to nerve input. EMGs help doctors diagnose neuromuscular disease, neurological disorders, muscle disease, and nerve abnormalities associated with pain or numbness.  

Back to Top

EMGs are usually outpatient electrodiagnostic procedures.  EMGs can take place at a doctor's office or in a hospital.  The nerve test typically lasts 30 to 60 minutes.
To begin, your doctor will place fine needle electrodes through the skin and into the muscles that a nerve controls.  The electrodes transmit information about the nerve/muscle electrical activity.  A computer records nerve impulses while the muscle is at rest and during muscle movement. 
The examiner may reposition the electrodes throughout the test. More than one muscle is typically tested.  Your doctor will share the results with you.
An EMG may be uncomfortable during the test.  Your muscles may remain a bit sore following the procedure. 
It is common for an EMG and another type of nerve test, nerve conduction velocity (NCV), to take place at the same time. The NVC usually precedes the EMG.

Back to Top


Copyright ©  - iHealthSpot, Inc. - www.iHealthSpot.com

This information is intended for educational and informational purposes only. It should not be used in place of an individual consultation or examination or replace the advice of your health care professional and should not be relied upon to determine diagnosis or course of treatment.

The iHealthSpot patient education library was written collaboratively by the iHealthSpot editorial team which includes Senior Medical Authors Dr. Mary Car-Blanchard, OTD/OTR/L and Valerie K. Clark, and the following editorial advisors: Steve Meadows, MD, Ernie F. Soto, DDS, Ronald J. Glatzer, MD, Jonathan Rosenberg, MD, Christopher M. Nolte, MD, David Applebaum, MD, Jonathan M. Tarrash, MD, and Paula Soto, RN/BSN. This content complies with the HONcode standard for trustworthy health information. The library commenced development on September 1, 2005 with the latest update/addition on April 13th, 2016. For information on iHealthSpot’s other services including medical website design, visit www.iHealthSpot.com.