EEG Testing Demystified: What You Need to Know About Brainwave Monitoring for Seizures

When you hear the term “EEG,” it may sound complicated or even intimidating. But at BNL Health, we believe that every patient deserves to understand their medical care in clear, simple terms. An EEG is actually a safe, painless, and straightforward test that helps your healthcare provider evaluate how your brain is functioning—especially if you’ve experienced seizures or episodes of unexplained confusion. Here’s everything you need to know.

What Is an EEG in Simple Terms?

EEG stands for “electroencephalogram.” While the name sounds technical, the idea is simple: an EEG records the electrical activity of your brain. Your brain is always producing tiny electrical signals, even when you’re sleeping. These signals travel across your scalp, and an EEG safely measures them using small sensors placed on your head.

The test does not use electricity, radiation, or needles. It only records what your brain is already doing. Doctors use EEGs to look at the patterns of your brainwaves and determine whether anything appears unusual.

Why Doctors Order an EEG

An EEG is most commonly ordered to evaluate symptoms that could be related to seizure activity. But it is helpful for many other concerns as well. At BNL Health, EEG testing is often recommended if you have experienced:

• Seizures or convulsions
• Loss of consciousness
• Fainting or “blackout” episodes
• Episodes of confusion or altered awareness
• Unusual movements or behaviors
• Periods of staring or unresponsiveness
• Memory gaps or unexplained cognitive changes

Some seizures are obvious, but others are subtle and may not involve shaking at all. An EEG can help detect patterns that indicate seizure activity, even if it isn’t visible from the outside. The test is also used to evaluate overall brain function after head injuries, infections, metabolic issues, or unexplained neurological symptoms.

What Happens During the EEG at BNL Health

If your provider schedules you for an EEG at BNL Health, here is what you can expect before, during, and after your appointment.

Before the Test

• Wash your hair beforehand, but avoid using conditioners, oils, gels, or styling products.
• Remove hairpieces, extensions, hats, clips, or anything else that could interfere with electrode placement.
• Wear comfortable clothing and plan for the test to take around one hour.

During the Test

• A trained technician will place small, round sensors (electrodes) on your scalp using a gentle adhesive or paste.
• You will lie back and relax while the EEG machine records your brain waves.
• You may be asked to open and close your eyes, breathe deeply, or look at a flashing light. These actions can help reveal brainwave abnormalities.
• The test is completely painless. You will not feel the electrodes or the recording process.

After the Test

• The electrodes are removed easily, and you may notice some leftover paste in your hair. This will wash out with shampoo.
• Most patients can immediately return to their normal activities unless instructed otherwise.

What an EEG Can and Cannot Tell You

Like any medical test, an EEG offers valuable information but also has limitations.

What an EEG Can Do

• Detect abnormal electrical activity associated with seizures
• Help determine the type of seizure disorder
• Establish a baseline for your brain’s electrical patterns
• Provide information to guide treatment decisions

What an EEG Cannot Do

• Rule out epilepsy entirely—some people with epilepsy have normal EEG results
• Pinpoint the exact physical location of a seizure inside the brain
• Provide images of the brain’s structure (for that, tests like CT or MRI are needed)

Because of this, your provider will often use your EEG results along with your medical history, symptoms, and possibly additional tests to make the most accurate diagnosis.

Why BNL Health’s Approach Matters

At BNL Health, EEG testing is performed in a comfortable, patient-focused environment. The care team understands that neurological symptoms can be stressful and that clear information is essential. By offering EEG testing in-house, BNL Health ensures that patients receive timely evaluation and that results are interpreted by experienced clinicians who understand the full context of your condition.

Their EEG process is designed to be efficient, respectful, and thorough. From preparation to interpretation, the goal is to give you answers and guidance you can trust.

When You Should Consider an EEG

You may benefit from an EEG if you have experienced:

• A seizure or unexplained convulsion
• A blackout, fainting episode, or sudden loss of awareness
• Recurrent episodes of confusion or disorientation
• Memory gaps or strange sensations you cannot explain
• Sudden behavioral changes without a clear cause

Even mild or occasional symptoms may be worth evaluating. Early testing can help your provider identify—and treat—neurological conditions before they progress.

Final Thoughts

An EEG is a valuable and noninvasive test that gives your healthcare provider essential information about how your brain is functioning. Whether you’ve had a seizure, experienced unusual episodes of confusion, or simply want clarity about your symptoms, an EEG can provide important answers.

BNL Health is here to support you with compassionate neurological care, clear communication, and reliable testing services.

If you think an EEG may be right for you or if you have questions about the process, contact BNL Health today to schedule an appointment.