EEG Testing in Cumberland & Hagerstown, MD
An EEG is a safe, painless test that records your brain's electrical activity — and it's one of the most useful tools a neurologist has for diagnosing seizures and unexplained spells. Here's what an EEG is, what to expect, and how to prepare.
An EEG only listens to your brain's natural activity — no needles, and no electricity sent into your body.
At Mir Neurology, EEG testing is central to how we get to the bottom of unexplained spells, seizures, and other neurological symptoms. Our board-certified neurologists order, oversee, and interpret your EEG for patients across Western Maryland, the Eastern Panhandle of West Virginia, and South-Central Pennsylvania.
Request an Appointment or call (301) 797-7600.
What Is an EEG?
An EEG, or electroencephalogram, is a test that measures the electrical activity of your brain. Your brain cells communicate through tiny electrical impulses, and an EEG records these patterns through small sensors — called electrodes — placed on your scalp.
The result is a recording of your brain waves that a neurologist interprets, looking for abnormal patterns that help explain your symptoms.
An EEG does not send any electricity into your body, and it's completely painless. It simply listens to your brain's natural activity.
Why Is an EEG Done?
Your neurologist may recommend an EEG to help evaluate:
- Seizures and epilepsy — the most common reason for an EEG
- Unexplained spells or episodes — staring spells, blackouts, or unusual movements
- Loss of consciousness or fainting of unclear cause
- Confusion or memory problems
- Certain sleep problems
- Monitoring brain activity in specific medical situations
An EEG is often used alongside other tests, such as an MRI, to build a complete picture.
What Does an EEG Show?
An EEG shows the timing and pattern of your brain's electrical activity. By analyzing these brain waves, a neurologist can identify:
- Abnormal electrical patterns associated with seizures or epilepsy
- Slowing or other changes that may point to certain conditions
- Whether activity is normal for your age and state — awake, drowsy, or asleep
An EEG is especially valuable because it can capture electrical changes that don't show up on imaging tests like a CT or MRI.
Types of EEG
Depending on what your neurologist is looking for, an EEG can be done in different ways. Choosing the right approach is part of getting an accurate answer.
| Type of EEG | How long | Where | Best for |
|---|---|---|---|
| Routine EEG | ~20–40 minutes | In office | First-line evaluation of seizures and unexplained spells |
| Sleep-Deprived EEG | ~20–60 min (after staying up) | In office | When a routine EEG is normal but seizures are still suspected — drowsiness can reveal more |
What to Expect During Your EEG — Step by Step
An EEG is simple and comfortable. For a routine in-office study, here's what happens:
- Setup
A technologist measures your scalp and attaches about 20 small electrodes using a gentle, washable paste. There are no needles and nothing sharp.
- Baseline recording
You relax — usually lying down or seated — with your eyes open at times and closed at others while the machine records your brain waves.
- Activation procedures
You may be asked to breathe deeply for a few minutes (hyperventilation) and to look at a flashing light (photic stimulation). These are harmless and can help reveal certain patterns.
- Drowsy or light sleep
You may be encouraged to relax or even doze, since some patterns are easier to see during drowsiness or light sleep.
- Finishing up
The electrodes are removed and the paste washes out with shampoo. There's no downtime — you can drive yourself home and return to your day.
- Interpretation
A neurologist reviews the full recording in detail and explains what it means for you.
How long does an EEG take? A routine EEG usually takes about 20–60 minutes including setup. A sleep-deprived study takes a similar amount of time once you arrive.
How to Prepare for Your EEG
- Wash your hair the night before and skip heavy oils, gels, conditioners, or sprays so the electrodes make good contact
- Continue your medications unless your provider tells you otherwise — never stop seizure medication on your own
- Go easy on caffeine the day of the test if instructed
- Follow any sleep instructions — for a sleep-deprived EEG, you'll be asked to arrive having slept little or not at all
Your care team will give you specific instructions for your type of study.
Understanding Your EEG Results
After the test, a neurologist reviews the recording in detail and interprets it alongside your symptoms and history. Results are generally described as:
Normal
Typical brain-wave patterns. Importantly, a normal EEG does not always rule out epilepsy, because abnormal activity may simply not occur during the recording.
Abnormal
Patterns that may point to seizures, epilepsy, or other changes — always interpreted in the context of your overall picture.
An abnormal EEG isn't something to fear — it's the information your neurologist uses to make an accurate diagnosis and recommend the right next step, whether that's treatment, further testing, or monitoring.
EEG Cost & Insurance
An EEG is a medically necessary diagnostic test, not an elective procedure — so it's covered by most insurance plans when your provider orders it to evaluate your symptoms.
- The test is billed to your insurance like other diagnostic testing
- Your out-of-pocket cost depends on your plan, deductible, and how the study is performed
- Some plans require a referral or prior authorization
Our team can verify your benefits before your appointment so you know what to expect. Call (301) 797-7600 with any coverage questions.
Why Choose Mir Neurology for Your EEG
Neurologist-Led
Your EEG is ordered, overseen, and interpreted by a board-certified neurologist — the specialist trained to read it accurately.
Routine & Sleep-Deprived EEG
In-office routine and sleep-deprived EEG, matched to what your neurologist needs to see.
Coordinated Care
Testing, diagnosis, and treatment stay in one place, so you get faster answers and a connected plan.
Close to Home
Two locations in Cumberland and Hagerstown — no long drives to Baltimore, Pittsburgh, or D.C.
What Our Patients Say
Mir Neurology is one of the most reviewed neurology practices in the region, rated 4.6★ across 200+ Google reviews.
"Dr. Khan did a thorough evaluation for my daughter. He was patient and took his time making sure we understood the next steps for her recovery. We were thankful that she was able to schedule an appointment a few days after leaving the ER."
"If you are looking for a neurologist, I highly recommend Dr. Mir and his wonderful staff. They treat you like a person and truly care about your well being. They take the time that is needed to thoroughly understand your medical needs."
EEG Testing Near You — Serving Western Maryland & the Tri-State Area
With offices in Cumberland and Hagerstown, we provide EEG testing for patients across the region.
Maryland
Cumberland, Hagerstown, LaVale, Frostburg, Cresaptown, Hancock, Williamsport, Smithsburg, Boonsboro
West Virginia
Martinsburg, Keyser, Romney, Berkeley Springs, Paw Paw
Pennsylvania
Waynesboro, Greencastle, Chambersburg, Mercersburg
Cumberland office: 924 Seton Dr Suite C, Cumberland, MD 21502 — Mon–Sat, 7:30 AM – 4:30 PM
Hagerstown office: 11110 Medical Campus Rd Unit 151, Hagerstown, MD 21742 — Mon–Fri, 7:30 AM – 5:00 PM
Frequently Asked Questions
What is an EEG used for?
Most often to diagnose and evaluate seizures and epilepsy. It also helps evaluate unexplained spells, loss of consciousness, confusion, and certain sleep-related conditions.
Is an EEG painful or dangerous?
No. An EEG is completely painless and safe. Small electrodes are placed on the scalp with paste — there are no needles, and no electricity is sent into your body.
Will I get an electric shock during an EEG?
No. An EEG only records your brain's own electrical activity. Nothing is sent into you.
How long does an EEG take?
A routine EEG usually takes about 20–60 minutes including setup. A sleep-deprived study takes a similar amount of time once you arrive.
What is a sleep-deprived EEG and why is it done?
It's an EEG done after you stay awake, because drowsiness can bring out abnormal patterns that a standard EEG might miss — useful when seizures are suspected but a routine EEG was normal.
How do I prepare for an EEG?
Wash your hair and skip styling products, continue your medications unless told otherwise, go easy on caffeine if instructed, and follow any sleep instructions.
Can I take my medications before an EEG?
Usually yes — continue them unless your neurologist gives you specific instructions. Never stop seizure medication on your own.
What does an abnormal EEG mean?
It means the recording showed unusual electrical patterns, which may point to seizures, epilepsy, or other changes. A neurologist interprets the results together with your symptoms and history.
Does a normal EEG rule out epilepsy?
Not necessarily. A normal EEG doesn't always rule out epilepsy, because abnormal activity may not happen during the recording. That's why a sleep-deprived EEG is sometimes used.
Does insurance cover an EEG, and how much does it cost?
An EEG is generally covered by insurance when medically necessary. It's billed like other diagnostic testing; your out-of-pocket cost depends on your plan and the type of study. Our team can verify your benefits beforehand.
When will I get my EEG results?
A neurologist reviews the full recording after the study and explains the results and next steps at your follow-up.
Where can I get an EEG near me in Western Maryland?
Mir Neurology provides EEG testing — including routine and sleep-deprived EEG — at our Cumberland and Hagerstown offices, serving Western Maryland, the WV Eastern Panhandle, and South-Central Pennsylvania.
Recommended for an EEG, or Dealing With Unexplained Spells or Seizures?
Mir Neurology offers EEG testing and complete neurological evaluation in Cumberland and Hagerstown.
Request an appointment | (301) 797-7600
This page is for general education and is not a substitute for professional medical advice, diagnosis, or treatment. Whether an EEG is right for you is determined by your physician. If you think you may be having a medical emergency, call 911.