Timing the end of nocturnal sleep
Article Abstract:
A study examined whether a rise in the secretion of pituitary-adrenal hormones in the later stages of sleep reflected anticipation of the stress of the waking stage. Polysomnographical recordings were made on volunteers with regular sleep-wake rhythms, and blood samples were taken to determine concentrations of adrenocorticotropin and cortisol in plasma. There was an increase in adrenocorticotropin in volunteers before being woken in the 'short sleep' condition, suggesting that anticipation pervades sleep.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1999
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A model for madness?
Article Abstract:
The differences in brain activity between walking and activated states of sleep, such as rapid eye movement, when intense dreaming commonly occurs are discussed. Taking advantage of natural changes in brain-mind state that contrast walking and dreaming, can confront the mind-body problem.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2004
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