Evidence supporting the idea of distinct stages of sleep

    Cards (1)

    • In 1957 Dement & Kleitman monitored the sleep
      patterns of 9 adult participants in a sleep lab .
      Brainwave activity was recorded on an EEG and the
      researchers controlled for the effects of caffeine
      and alcohol. REM activity during sleep was highly
      correlated with the experience of dreaming, and
      participants woken during dreaming reported very
      accurate recall of their dreams
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