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means recording of the brain’s spontaneous electrical activity over a short period of time, usually 20–40 minutes. It is recorded from multiple metal discs/electrodes placed on the scalp. An EEG is one of the main and very important diagnostic tests for epilepsy. EEG also plays important role in diagnosis of other brain disorders.
⩥ An EEG is used to detect problems in the electrical activity of the brain that may be associated with certain brain disorders.
↪ Seizure disorders (such as epilepsy)
↪ Non epileptic seizures
↪ Head injury
↪ Encephalitis (inflammation of the brain)
↪ Brain tumour
↪ Altered mental state / confusion (Encephalopathy, disease that causes brain dysfunction)
↪ Memory problems and Dementia
↪ Sleep disorders
↪ Delirium
↪ Coma and Brain Dead Conditions
↪ There are absolutely no risks associated with an EEG. The patient is required to stay calm and comfortable during the test. It is completely painless and non-invasive.
↪ Wash your hair the night before or the day of the test.
↪ Please do not use any conditioners, hair oils, hair creams, sprays or styling gels.
↪ Avoid coffee, tea or energy drinks 6 hours before the test.
↪ Take your usual medications unless instructed otherwise.
↪ If you’re supposed to sleep during your EEG test, your doctor may ask you to sleep less or even avoid sleep entirely the night before your EEG.
An EEG (Electroencephalogram) is a non-invasive test that records the brain’s electrical activity. It is used to diagnose conditions such as epilepsy, seizures, sleep disorders, and other neurological issues.
While a standard EEG records only brain activity, a Video EEG also captures video of your physical behavior. This helps doctors correlate movements or symptoms (like seizures) with electrical changes in the brain for a more accurate diagnosis.
Before the test, wash your hair and avoid using oils, sprays, or gels. Continue taking your regular medications unless advised otherwise. You may also be asked to sleep less the night before if a sleep-deprived EEG is needed.
No, both tests are completely painless and safe. Electrodes are placed on your scalp with a paste or cap. You might feel a bit of pressure but no discomfort during the test.
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