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A sleep EEG is carried out while you're asleep. It may be used if a routine EEG does not give enough information, or to test for sleep disorders. In some cases, you may be asked to stay awake the night before the test to help ensure you can sleep while it's carried out.
Sep 6, 2024 · An EEG is a noninvasive brainwave test that is used to evaluate and diagnose epilepsy, sleep disorders, and changes in consciousness. Sometimes EEG is necessary to help distinguish epilepsy from conditions that may have similar symptoms, such as movement disorders or migraine.
- Epilepsy. Epilepsy is a neurological seizure condition that occurs in one of several parts of the brain. The main symptom of epilepsy is recurrent seizures due to unusual electrical brain activity.
- Sleep disorders. Sleep disorders include problems with the amount or quality of sleep a person has, often due to an underlying physical or emotional cause.
- Traumatic brain injuries. Head injuries, or traumatic brain injuries (TBIs), occur when a strong force to the head causes damage to the brain, resulting in temporary or permanent impairment of cognitive, physical, and psychosocial functions.
- Brain infection or inflammation. Brain inflammation, or encephalitis, primarily occurs after a viral infection. Other causes may involve the immune system mistakenly attacking brain tissue.
A sleep EEG (electro-encephalogram) is the recording of electrical activity produced by the brain whilst you sleep. It will help your doctor in making a diagnosis. A sleep EEG is useful as it obtains different information to the routine EEG, as brainwave patterns change during sleep.
A sleep-deprived EEG is the recording of the brain activity following a period of no sleep. The night before your appointment you’ll limit your sleep (more details below), and then come to the Neurophysiology Department in the morning.
How is a sleep EEG used? Recording the EEG during drowsiness and sleep can be useful to identify brain activity which may not be present while your child is awake. It can be carried out on patients of all ages and abilities, making it a good way to get an overall view of the function of the brain.
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ectroencephalogram. A sleep EEG is a recording of the electrical activity of the brain while you are aw. ke and then asleep. It involves having small discs (electrodes) which record the activity attached to you.
