ELISABETH SCHNEIDER / LOOK AT SCIENCES / SCIENCE PHOTO LIBRARY ELISABETH SCHNEIDER / LOOK AT SCIENCES / SCIENCE PHOTO LIBRARY
Paediatric sleep study. Teenage boy with narcolepsy being prepared for a sleep study (Polysomnography, PSG). Electrodes are placed on his head to measure brain activity, eye and facial movement during the day and whilst asleep. Narcolepsy is a chronic sleep disorder (dyssomnia), characterised by excessive sleepiness and falling asleep at inappropriate times. Photographed at the Centre for Paediatric Sleep Disorders, Robert-Debre Hospital, Paris, France.
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