Dement and Kleitman
- Created by: emma
- Created on: 30-03-14 21:47
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- Dement and Kleitman
- Aim
- To investigate the relationship between REM sleep and dreaming
- H1: people will be more likely to report dreams if woken during REM than NREM
- H2: people can accurately estimate the time spent deaming
- H3: Direction of eye movement during REM sleep is related to dream content
- Method and Participants
- 9 adults, 7 male 2 female
- 5 studied intensively, woken several times a night over 6-17 nights
- 4 studied non intensively only 1-2 nights
- Studied over a total of 61 nights
- EEG measured brain wave activity, EOG measured eye movement
- Observation and participants self reports of dream length and content
- Lab experiment using IMD for intensive/non intensive and repeated measures for conditions to test each hypothesis
- 9 adults, 7 male 2 female
- Procedure
- Overall
- Avoid caffeine and alcohol but eat normally
- Report to sleep lab before normal bedtime
- Slept in quiet dark room
- Electrodes attached to scalp and around eyes
- Woken by doorbell and spoke into tape recorder
- asked what they had been dreaming and estimate the duraton
- H1
- 5 intensively studied woken 1 of four ways
- 2 according to a random numbers table to remove pattern
- 1 at whim of the experimenter
- 1 in 3 periods of REM and 3 non REM sleep
- 1 woken randomly having told they would only be woken in REM sleep
- 4 non intensively studied woken randomly
- Asked if they had been dreaming
- 5 intensively studied woken 1 of four ways
- H2
- Woken either 5 or 15 minutes into REM sleep and asked to estimate length by choosing between 5 or 15 mins
- Asked to relate dream content lenght of narrative correlated to duration of REM
- H3
- Partcipants asked to related dream content 1 minute after eye movement was observed
- Horizontal
- Vertical
- Horizontal and vertica;
- Littlle or no eye movement
- Partcipants asked to related dream content 1 minute after eye movement was observed
- Overall
- Results
- H1
- REM sleep recall 43% no recall 10%
- Non REM sleep recall 3% no recall 42%
- H2
- Woken after 5 min right 45 wrong 6
- Woken after 10 right 47 wrong 13
- H3
- Horizontal- throwing tomatoes at each other
- Vertical- climbing a ladder
- Both- looking at close objects (talking to a group of people)
- No- looking at distant objects (driving a car then being startled by an obstruction)
- H1
- Conclusion
- Connection between REM sleep and dreaming
- Eye movement related to dream content as eyes were moving as if seeing
- Aim
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