Dement and Kleitman ( sleep and dreams )

• Technique used to measure brain activity

  EEG/electroencephalogram/electroencephalograph
• Uses of the EEG/electroencephalogram/electroencephalograph

  • To identify when a person was in REM/nREM sleep/which stage of sleep
  • To analyse the brain wave patterns (of participants)
  • The measure provided is objective
  • The measure provided is reliable
• Dream reported when vertical eye movement was recorded

  • Standing at the bottom of a cliff
  • Operating some sort of hoist machine
• Dream-duration estimates


  • Participants were more accurate at estimating 5 mins compared to 15 mins
• On 88% of trials (45/51) the participants estimated 5 mins correctly
• On 78% of trials (47/60) the participants estimated 15 mins correctly
• Dream recall in REM sleep

  There were many more instances of dream recall in REM compared to instances of no recall/recall in NREM