Timing the end of nocturnal sleep

  title={Timing the end of nocturnal sleep},
  author={Jan Born and Kirsten Hansen and Lisa Marshall and Matthias M{\"o}lle and Horst Lorenz Fehm},
Some people can quite accurately time the end of their night's sleep at will, without using an alarm clock, demonstrating that it is possible to voluntarily control a state of consciousness that is characterized by a loss of volition and attentional guidance. Here we show that the expectation that sleep will come to an end at a certain time induces a marked increase in the concentration of the hormone adrenocorticotropin in the blood one hour before waking. The regulation of adrenocorticotropin… CONTINUE READING

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