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• n  a very sleepy state
  sleepiness causes many driving accidents

• Malis combs YouTube and other websites for videos, then rates the animals on cuteness and sleepiness scales from 1 to 5.
• ANDREW WEIL: Yes, definitely appropriate not just to reduce sleepiness but to treat the problems.
• Kleitman had much difficulty, his periods of wakefulness and sleepiness and his temperature cycle clinging to the 24-hour schedule.

• drowsiness
• somnolence

• wakefulness

News & Articles

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• New clue to cause of human narcolepsy
  Researchers have found that an excess number of brain cells that produce the chemical histamine may cause the loss of other cells that produce hypocretin, the neuropeptide that keeps us awake, elevates mood and alertness, and, by their absence, explains the sleepiness of narcolepsy.
  July 3, 2013 - Science Daily
• UCLA researchers find new clue to cause of human narcolepsy
  ( University of California - Los Angeles ) UCLA researchers have found that an excess number of brain cells that produce the chemical histamine may cause the loss of other cells that produce hypocretin, the neuropeptide that keeps us awake, elevates mood and alertness, and, by their absence, explains the sleepiness of narcolepsy.
  July 3, 2013 - EurekAlert!

Quotes

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• Winston Churchill in BBC News
  Professor John Stradling, the clinical director of the Sleep Unit at Churchill Hospital, Oxford, said: "Unfortunately, society as a whole is guilty of trivialising excessive sleepiness as a medical symptom. This is echoed by the low priority placed...