During the EMG test, the electrical activity of the muscular system and the nerves that move the muscles are examined, and the transmission of electrical signals through the neuromuscular junction is also examined. Every voluntary muscle movement begins with an alert that reaches the brain. This alert passes through the spinal cord and then through the peripheral nerves to reach the muscle, which leads to its movement.

When is this examination performed?

This examination is performed when the doctor suspects that there is a problem with the muscles or nerves, through the appearance of some symptoms, such as:

Numbness.

numbness.

Muscle weakness and pain.

Involuntary spasms.

paralysis.

category at risk

Among the most important diseases that require examination

muscle disorder.

myasthenia gravis.

Peripheral nerve disorders, such as: Carpal tunnel syndrome.

Nerve disorders, such as amyotrophic lateral sclerosis.

Muscle atrophy.

The method of conducting the examination

No examination preparations are made.

In this test, small electrodes are ed into certain muscles, and by means of them the electrical signal resulting from the muscle contraction is examined, then the nerve conduction velocity is examined by initiating an electrical signal, and the time required for the reaction to occur is examined.

Warnings

Public

This test does not carry any significant risks, although some patients claim that this test is unpleasant and may cause minor pain and stinging.

During pregnancy

There are no special problems.

Breast feeding

There are no special problems.

Children and infants

There are no special problems, but young children may need to be sedated with some sedative medication.

Elderly

There are no special problems.

Driving

There are no special problems.

Medications that affect the test result

You must tell the doctor about all the medicines you use before the examination.

Analysis of the results

The results of the examination can be explained as follows

Proper results: proper signal transmission in the nerve, and a healthy muscle response.

Improper results: a problem with the conduction of signals through nerves, a problem with reflexes, or both.