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EEG

An EEG or electroencephalogram is used to detect electrical activity in your brain. Its primary use is a diagnostic tool for epilepsy. Additionally, the test may be used to confirm a diagnosis of encephalopathy or other brain issue.
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Topic at a Glance

  • An EEG (electroencephalogram) records the brain’s electrical activity and is mainly used to diagnose epilepsy.
  • It may also help identify brain tumors, brain injuries, encephalopathy, encephalitis, stroke, dementia, and sleep disorders.
  • The test is painless, with no shocks or needles; electrodes or a special cap are placed on the scalp, and the session is video recorded.
  • It typically takes about an hour, and you may be asked to open and close your eyes, do math problems, read, or change your breathing.

Specialties

Neurology

Pain Management

Diagnostic Tests

Therapeutic Procedures

Uses of EEG

Understanding the electrical activity in the brain is crucial for diagnosing brain disorders. Although its primary use is in the diagnosis of epilepsy it may also be used to identify:

• Tumors of the brain

• Injuries to the brain

• Encephalopathy

• Encephalitis

• Stroke

• Dementia

• Sleep disorders

During the EEG Procedure

The EEG testing process is painless. There are no shocks sent into the body and no needles used. The test is simply done by electrodes recording the electrical activity within the brain. During the test:

  • The technician will measure your head and determine the best placement for your electrodes. The areas being used may be cleaned to improve the accuracy of the test results.

 

  • The technician will then place the electrodes on your scalp or use a specially designed cap. The electrodes are connected by wires to a machine that records the electrical activity.

 

  • The session is video recorded so that your movements may be seen alongside your brain activity. This can be helpful during your diagnosis.

 

  • The test typically takes about one hour. You may be asked to do different functions during the tests including opening and closing your eyes, perform math equations, read or to change your breathing pattern.

 

Once the test is complete, the electrodes are removed and you can continue on with your day. In some instances, sedatives are used, those individuals will be required to have someone drive them home after the test.

FAQs About EEG

Does an EEG hurt?

No. No shocks are sent into the body, and no needles are used. Electrodes simply record your brain’s electrical activity.

The test typically takes about one hour.

The video lets your movements be seen alongside your brain activity, which can be helpful during diagnosis.

Only if sedatives are used. Otherwise, the electrodes are removed, and you can continue on with your day.

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