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Brain waves in epilepsy

Brain waves in epilepsy

M150/0286

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Credit

SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY SOVEREIGN, ISM / SCIENCE PHOTO LIBRARY

Caption

Brain waves in epilepsy. Electroencephalogram (EEG) of a 18-year-old's brain during an epileptic episode (chaotic brain activity). This EEG shows complex epilepsy, where complex means that the patient loses consciousness. Although large parts of the brain are affected, this is technically still focal (localised) epilepsy, because not all of the brain is affected (central traces are less affected). During this epileptic episode, the patient's speech was incoherent and there were spasms in the patient's left hand. An EEG measures the electrical activity of the brain (brain waves) using electrodes attached to the scalp (electrode locations labelled at far left).

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