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Finding the sleep switch

Sleep and the mysteries of the master switching centre of the brain

Sleep and the mysteries of the master switching centre of the brain. Since the 1940s it has been thought the hypothalamus contains the human 'sleep' switch, now US researchers have managed to isolate the exact part of the brain that allows us to rest. Also in the programme, why scientists are using jumping genes to control the fruit fly and the living enzymes being taken from mummified remains. Presenter: Martin Redfern.

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28 minutes

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