This information is not intended to replace the medical advice of your health care provider. At Mayfield, we work with diagnostic imaging providers in the Greater Cincinnati-Northern Kentucky region to obtain images of the brain and spine and interpret them with expertise and care. Patients and referring physicians can rest assured that we will lay the groundwork for a diagnosis of utmost accuracy.
To make an appointment call Make an Appointment. How does an EEG work? Figure 1. A sample EEG recording showing a focal spike typical of a seizure.
Now, with her seizures under control, Janice has a renewed sense of optimism. Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission. This content does not have an English version. This content does not have an Arabic version. Request an Appointment at Mayo Clinic.
EEG electrodes Open pop-up dialog box Close. Fresh Approach to Epilepsy Treatment Rekindles Zest for Life Janice Breien was anxious to find a better way to manage the seizures that regularly disrupted her daily life.
Share on: Facebook Twitter. Show references Moeller J, et al. Electroencephalography EEG in the diagnosis of seizures and epilepsy. Accessed Feb. Neurological diagnostic tests and procedures fact sheet. National Institute of Neurological Disorders and Stroke. Hirsch LJ, et al. When the test is finished, the electrodes will be removed and your scalp will be cleaned.
Your hair will probably still be a bit sticky and messy afterwards, so you may want to wash it when you get home. You can usually go home soon after the test is finished and return to your normal activities. You might feel tired after the test, particularly if you had a sleep or sleep-deprived EEG, so you may want someone to pick you up from hospital. You normally will not get your results on the same day. The recordings will need to be analysed first and will be sent to the doctor who requested the test.
They can discuss the results with you a few days or weeks later. The EEG procedure is painless, comfortable and generally very safe. No electricity is put into your body while it's carried out. Apart from having messy hair and possibly feeling a bit tired, you normally will not experience any side effects.
However, you may feel lightheaded and notice a tingling in your lips and fingers for a few minutes during the hyperventilation part of the test. Some people develop a mild rash where the electrodes were attached.
On this page. Conditions diagnosed by EEG Normal brain waves occur at a rate of up to 30 per second, but in someone with epilepsy, for example, the EEG may show bursts of abnormal discharges in the form of spikes and sharp wave patterns. Other conditions that may be diagnosed with the aid of an EEG include: Sleep disorders such as narcolepsy Head injuries Brain infection Brain haemorrhage Alzheimer's disease Degeneration of brain tissue Metabolic conditions that affect brain tissue Hormonal conditions that affect brain tissue Certain disorders of the central nervous system Stroke Brain tumour Brain death.
Medical issues to consider An abnormal EEG doesn't automatically mean that you, for example, have epilepsy. EEG procedure Your hair must be thoroughly clean, but most importantly dry. Immediately after the EEG Once the test is complete, the electrodes are removed and you are allowed to get up.
Taking care of yourself at home EEG is a safe procedure. Long-term outlook The EEG technologist can't interpret the test results on the spot. Other diagnostic tests Other diagnostic tests depend on the condition under investigation. Where to get help Your doctor Neurologist Things to remember The electroencephalogram EEG is a medical test used to measure the electrical activity of the brain. A number of electrodes are applied to your scalp.
EEG can help diagnose a number of conditions including epilepsy, sleep disorders and brain tumours. Give feedback about this page. Was this page helpful? Yes No. View all medical tests. Related information. Content disclaimer Content on this website is provided for information purposes only.
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