2536650
Description
Mind Map by Georgia Stanley, updated more than 1 year ago
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Created by Georgia Stanley
about 9 years ago
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Dement and Kleitman (1954)
- sample
- opportunity sampling
- 9 Pts
- 7 adult males
- 2 adult females
- 5 were studied intensivley
- 7 adult males
- why were some of the Pts.
not studied intensively?
- to back up the findings of the main 5
- to back up the findings of the main 5
- opportunity sampling
- Aim
- to gain some objective physiological data about sleep and dreaming using
physiological measures and taking as scientific an approach as possible
- to gain some objective physiological data about sleep and dreaming using
physiological measures and taking as scientific an approach as possible
- key terms
- EEG; electroencephalograph
- EOG; electro-oculogram
- EMG; electromyogram
- EEG; electroencephalograph
- REM sleep involves:
- - hard to wake people up
- the body is paralysed
- to prevent people from moving and acting out their dreams
- to prevent people from moving and acting out their dreams
- - hard to wake people up
- method/ design
- laboratory experiment
- laboratory experiment
- procedure
- - eat normally; no cafine/ alcohol
- went to bed in a quiet, dark room
- - electrodes attached to face + scalp
- - 2+ electrodes near Pts. eyes to record changes by eye movement
- - 2 or 3 electrodes attached to scalp to record brain activity
- - eat normally; no cafine/ alcohol
- controls
- - no communication between experimenter and
sleeper until after they told their dream content
- - not told whether; REM or NREM sleep
- - no caffine/ alcohol
- woken by a door bell
- - no communication between experimenter and
sleeper until after they told their dream content
- ethical problems
- deception
- - told awakened when he was dreaming but awakenings were random
- - told awakened when he was dreaming but awakenings were random
- deception
- what can be conducted
from the study?
- - is a relationship between REM and dreaming.
- eye movement + dream content
- eye movement + dream content
- sleep patterns show a cycle of 4
stages of sleep and REM/NREM
- - is a relationship between REM and dreaming.
- hypothesis/ design
- 1. There will be a significant association between REM sleep + dreaming
- 2. There will be a significant positive correlation between the
estimate of the duration of dreams and the length of eye movement
- 3. There will be a significant association between the pattern of
eye movement and the context of the dream
- INDEPENDENT GROUPS
- 1. There will be a significant association between REM sleep + dreaming
- results
- 1
- subjects were woken either in REM or NREM
- 2 Pts were woken randomly
- 1 pts; woken 3 times in REM then 3 times in NREM
- 1pts told he was only woken in REM but woken randomly
- 1pts was woken whenever the experimenter wanted to
- recall dreams most = REM
- 2 Pts were woken randomly
- subjects were woken either in REM or NREM
- 2
- Pts woken randomly either 5 or 15mins into REM
- Pt. was asked o say whether they had been dreaming for 5 or 15 mins
- woken randomly at 1 of these 2 times (5or15)
- woken randomly at 1 of these 2 times (5or15)
- estimates = accurate
- found positive correlation
- Pt. was asked o say whether they had been dreaming for 5 or 15 mins
- Pts woken randomly either 5 or 15mins into REM
- 3
- vertical eye movement = standing at the bottom of a tall cliff
- horizontal EM = watching 2 people throwing tomatos at each other
- both = bert + ernie = table tennis
- Little/no = driving a car + staring = fast car from left
- significant association = YES
- vertical eye movement = standing at the bottom of a tall cliff
- 1
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