What Is EEG (Electroencephalogram)?
An electroencephalogram (EEG) is a test that measures electrical activity in the brain using electrodes placed on the scalp.
Classification: Other › EEG (Electroencephalogram)
Key Takeaway
EEG is a core neurological test for seizures, sleep studies, and certain conditions. Consumer EEG devices exist for meditation and biofeedback.
Why This Matters
Clinical EEG is used to diagnose seizure disorders, evaluate unexplained loss of consciousness, assess certain dementias, and monitor brain activity in intensive care. It can record specific brain wave patterns (alpha, beta, theta, delta, gamma), each associated with different states of alertness. Consumer EEG devices like Muse and NeuroSky offer simplified EEG feedback for meditation, focus training, and sleep applications. Consumer devices are not diagnostic but can be useful for self-awareness and practice.
Frequently Asked Questions
What is an EEG?
A test that measures electrical activity in the brain using electrodes placed on the scalp.
What conditions is EEG used for?
Seizure disorders, unexplained loss of consciousness, sleep studies, certain dementias, and ICU brain monitoring.
Are consumer EEG devices useful?
They are not diagnostic but can be useful for meditation feedback, focus training, and personal awareness of brain states.
