Electroencephalogram (EEG) Tests Mississippi

Electroencephalogram (EEG) Overview

An electroencephalogram, or EEG, is a non-invasive test used to measure the brain’s electrical activity. An EEG can be used to evaluate brain activity in both children and adults and may help neurologists better understand symptoms such as seizures, changes in awareness or certain sleep-related concerns.

At Hattiesburg Clinic, EEG testing is available to help our neurologists and pediatric neurologist evaluate brain activity and identify patterns that may provide important information about a patient’s neurological condition.

What Does an EEG Measure?

An EEG measures brainwave patterns and electrical activity across different areas of the brain. These brainwaves are categorized into four main types: alpha, beta, theta and delta waves. Each type represents a different pattern of electrical activity in the brain, and changes or irregularities in these patterns may signal neurological issues or disorders.

EEGs are commonly used to help evaluate and categorize seizure types. They may also be used when evaluating certain sleep disorders and brain conditions, including encephalitis.

In adults, an EEG can help diagnose conditions affecting brain function, including dementia or Alzheimer’s disease. EEGs may also be used to evaluate changes in brain activity following a stroke, brain injury or infection.

For children, EEGs are frequently used as part of an evaluation for seizures and epilepsy, unusual movements, changes in awareness or other symptoms that may be related to abnormal brain activity.

An EEG does not diagnose every neurological condition on its own. Neurologists consider EEG results along with a patient’s symptoms, medical history and other diagnostic information.

EEGs for Alzheimer’s Disease and Dementia

In people with Alzheimer’s disease or other forms of dementia, an EEG may show changes in the brain’s electrical activity, such as slowing of certain brain wave patterns. However, an EEG cannot diagnose Alzheimer’s disease or dementia on its own. Instead, it may be used as part of a broader neurological evaluation to help doctors understand changes in brain function and rule out other conditions.

What Happens During an EEG?

During an EEG, you will be seated or lying in a comfortable position. A technician will place small, flat metal electrodes on your scalp using a conductive gel. The electrodes record brain activity while you remain still and follow the technician’s instructions.

Depending on the type of EEG and the reason for testing, you may be asked to perform certain tasks, such as opening and closing your eyes, looking at a flashing light or changing your breathing patterns. Some EEGs may include a period of sleep or may require you to sleep during the test so your neurologist can evaluate brain activity during different states.

The length of an EEG can vary depending on the type of test. A routine EEG typically lasts about 20 to 40 minutes, while sleep or extended EEG monitoring may take longer.

How to Prepare for Your EEG

Preparation for an EEG is relatively simple. Your neurologist or EEG technician will provide specific instructions based on the type of test you are having. General preparation may include:

Wash Your Hair: Wash your hair the night before or the morning of your EEG. Shampoo your hair thoroughly and do not use conditioner, oils or styling products. Clean hair helps the electrodes adhere properly to your scalp.
Avoid Caffeine: You may be asked to avoid caffeinated drinks, such as coffee, soda or energy drinks, before your EEG. Follow the specific instructions provided by your care team.
Wear Comfortable Clothing: Wear comfortable clothing that allows you to sit or lie comfortably during the test.
Follow Sleep Instructions: Depending on the type of EEG, you may be asked to limit your sleep before the test. Sleep deprivation can make certain types of abnormal brain activity easier to detect. Your neurologist will let you know if you need to adjust your sleep schedule.
Take Medications as Directed: Tell your neurologist about all medications and supplements you take. Some medications can affect brain activity, but you should not stop taking any medication unless your neurologist specifically instructs you to do so.

For children: Parents or caregivers may receive additional instructions to help a child prepare for an EEG, particularly if the test includes sleep. Following the preparation instructions can help the EEG technician obtain a complete recording.

Choose Hattiesburg Clinic

Hattiesburg Clinic offers EEG testing for both children and adults, allowing our neurologists and pediatric neurologist to evaluate brain activity as part of a broader approach to neurological care. EEGs are performed at the clinic using specialized diagnostic technology, with results reviewed by the appropriate neurological care team to help guide diagnosis and treatment.

Our patient-centered approach ensures patients receive personalized care tailored to their unique needs. With a reputation for excellence and commitment to quality, our team provides a comfortable and supportive environment for patients undergoing neurological evaluations.

If you or your child has been referred for an EEG, our team can provide information about what to expect and how to prepare for the test. Contact Hattiesburg Clinic to learn more.

Electroencephalogram (EEG)