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Dopamine fends off zzzzz’s

The chemical keeps sleep-deprived people going

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3:56pm, August 19, 2008

A reward chemical in the brain is a real eye-opener.

Dopamine, a feel-good brain chemical, helps keep sleep-deprived people awake, researchers from the National Institute on Drug Abuse show in the August 20 Journal of Neuroscience. Dopamine is also required for activity of a drug that treats narcolepsy, Japanese and Chinese scientists report in the same issue of the journal.

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