EEG is a non-invasive test that records the electrical activity of the brain and may help doctors evaluate seizures, epilepsy and other neurological conditions.
EEG Test at Sparsh Hospital, Jalandhar
An electroencephalogram, commonly called an EEG, is a non-invasive test that records the electrical activity of the brain. It can provide useful information when a doctor is evaluating certain neurological symptoms or conditions.
At Sparsh Brain, Spine & Multispeciality Hospital, an EEG may be recommended as part of a neurological evaluation when clinically appropriate.
What Is an EEG?
An EEG records electrical activity produced by the brain using small electrodes placed on the scalp. The electrodes detect the electrical signals, which are recorded and later reviewed by an appropriately trained medical professional.
The test does not involve sending electricity into the brain and is generally painless.
Why Is an EEG Done?
An EEG is commonly used when doctors need information about abnormal electrical activity in the brain. It may be particularly useful in the evaluation of seizures and epilepsy.
Depending on the patient's symptoms, an EEG may also be requested as part of the assessment of other neurological conditions.
What Happens During an EEG?
Before the test, small electrodes are attached to the scalp using a suitable conductive material. The electrodes are connected to an EEG recording system.
During the recording, you may be asked to remain relaxed and still. The healthcare professional performing the test may ask you to open or close your eyes, breathe in a particular way or look at a flashing light, depending on the type of EEG and the clinical reason for the test.
How Long Does an EEG Take?
The duration of an EEG depends on the type of examination being performed. A routine EEG may take a relatively short period, while longer recordings may be recommended in some situations.
Your healthcare team will tell you how long your particular test is expected to take and whether any special preparation is required.
Preparing for an EEG
Preparation instructions can vary depending on the type of EEG. You may be advised to have clean hair without hair oil, gel or other styling products so that the electrodes can be attached properly.
Take your medicines as instructed by your doctor unless you have specifically been told otherwise. Do not stop anti-seizure or other prescribed medicines on your own.
If you have been asked to undergo a sleep-deprived EEG, your healthcare team will provide specific instructions about sleep and preparation.
Is an EEG Painful?
An EEG is generally painless. The electrodes placed on the scalp record brain activity but do not deliver an electrical current into the brain.
Some patients may experience mild discomfort from having the electrodes attached or removed, but the test itself should not be painful.
What Does an EEG Show?
An EEG can record patterns of electrical activity in the brain and may help identify abnormal electrical activity associated with certain neurological conditions.
The EEG result is interpreted together with the patient's symptoms, medical history and other investigations. An EEG result on its own does not always establish a diagnosis.
EEG and Epilepsy
EEG is an important investigation in the evaluation of seizures and epilepsy. It may help identify abnormal electrical activity and provide additional information to the treating neurologist.
However, a normal EEG does not necessarily exclude epilepsy. Your doctor will interpret the result in the context of your symptoms and clinical history.
After an EEG
Most patients can return to their usual activities after a routine EEG unless their healthcare team gives different instructions.
If the EEG involved sleep deprivation, you may feel tired afterwards. Follow any specific instructions provided by your healthcare team.
Frequently Asked Questions
Is an EEG safe?
EEG is a non-invasive test and is generally considered safe. The electrodes record brain activity and do not deliver electrical current to the brain.
Can an EEG diagnose epilepsy?
An EEG can provide important information when evaluating seizures and epilepsy, but the result is interpreted together with symptoms, medical history and other clinical information.
Does a normal EEG mean I do not have epilepsy?
Not necessarily. Some people with epilepsy can have a normal EEG between seizures. Your doctor will interpret the result in the context of your overall clinical history.
Can I take my regular medicines before an EEG?
Take your medicines according to your doctor's instructions. Do not stop prescribed medicines, particularly anti-seizure medicines, unless your healthcare team specifically tells you to do so.
Should I wash my hair before an EEG?
You may be asked to arrive with clean hair without oil, gel or other styling products so that the electrodes can be attached securely. Follow the specific preparation instructions provided by the testing team.
EEG Test in Jalandhar
If your doctor has recommended an EEG because of seizures, unusual episodes or other neurological symptoms, the test can provide additional information to support the clinical evaluation.
Bring your previous medical reports and a list of your current medicines to your appointment when available. Your treating doctor will explain the results and advise you about the next steps.