What is an EMG?

What is an EMG? | Neuroscience & Spine Associates Blog

EMG stands for electromyography and is an assessment test used to measure muscle response and the motor neurons that control them in the human body. An EMG test is performed by an Electromyographer, a specialist neurologist. EMG testing does not require hospitalization and can last between 30 minutes to 2 hours.

What happens during an EMG Test?

During an EMG, electrodes are inserted in the muscles to measure response in the form of electrical activity. The electrical activity is observed on a monitor called an oscilloscope. The test results can also be translated into sounds with the use of an audio amplifier.

During the testing a patient may be asked to rest and contract (lift or bend) muscles in order to observe their activity. The specialist conducting the test will monitor response, looking for neuromuscular abnormalities.

What does and EMG Diagnose?

An EMG is used to diagnose multiple disorders, which can include:

  • Carpal tunnel syndrome
  • Pinched nerves
  • Nerve root injury such as Sciatica
  • Radiculopathy
  • Neuropathies
  • Muscle diseases
  • Muscular dystrophy
  • ALS
  • Myasthenia gravis

Is an EMG Dangerous?

The electrodes are small needles, so you may experience some discomfort as the electrodes are inserted. The muscles may also feel sore for a few days after the testing. Bruising may occur.
Tell your doctor before your EMG if any of the following apply to you:

  • You use a pacemaker or other medical devices
  • You experience blood clotting disorders such as hemophilia
  • You are taking blood-thinning medications

Preparing for you EMG

  • Showering before your test helps to remove oils from your skin, which can achieve clearer results
  • Don’t use lotions or creams before your exam

Related Testing: NCS

A nerve conduction study (NCS) may be performed along with EMG testing. This test is non-invasive and is often paired with EMG testing to provide additional information about electrical conduction of the body as well as sensory and motor nerves.

EMG Testing in Naples, Florida

Neuroscience & Spine Associates performs EMG testing in Naples, Florida at our MRI Center location at 877 111th Avenue. Our EMG techniques feature the most advanced technologies completed by trained Electromyographers to help ensure accurate diagnostics. Our physicians are available to view your results as soon as it is completed.



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