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Brain waves in epilepsy

Brain waves in epilepsy

M150/0274

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Credit

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

Caption

Brain waves in epilepsy. Electroencephalogram (EEG) of an 11-year-old girl's brain as she sleeps during an epileptic episode (chaotic brain activity). This EEG shows focal epilepsy, where only part of the brain is affected, and the effects depend on the area affected. Here, the EEG shows chaotic activity in the left centrotemporal area (bottom two traces). Epilepsy can take many forms, and this is benign epilepsy, an inherited childhood form of epilepsy that normally improves with age. The rest of the EEG traces mostly show light, slow sleep. 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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