Sleep Studies Flashcards
1
Q
Morgan
What did they find? What aspect/theory of sleep does it support?
A
- Removed SCN from hamsters - circadian rhythm disappeared - no rhythm without SCN.
- superchiasmatic nucleus (nuclei).
2
Q
Schochat
What did they find?
A
- Found period of greatest sleep propensity occurred just after melatonin secretion.
3
Q
Campbell and Murphy
What did they find?
A
- Participants given regular light exposure on the back of their knees, caused changes in their biological rhythms in line with the light/dark they were exposed ti
4
Q
Folkhard
What did they find? What aspect/theory of sleep does it support?
A
- Participants lived in a cave for 12 weeks, researchers quickened the clock the followed to 22 hours, volunteers cycle stayed at 24 hours - SCN overruled clock.
- superchiasmatic nucleus (nuclei).
5
Q
Miles et al
What did they find? What study does this support?
A
- Studied blind man from birth, had a strong 24.9 hour circadian rhythm, struggles resetting biological rhythms, has to take sedatives - shows that you cannot reset your body clock naturally without the use of light.
- Folkhard
6
Q
Cho
What did they find?
A
- Found that cabin crew had problems with working memory which became apparent after years of disruption of circadian rhythms - shows disruption can cause other problems.
7
Q
Cho (2)
What did they find?
A
- Found that those wit short jet lag recovery (5 days) between flights had smaller temporal lobes and lower scores on visio spacial tasks than those with a longer recovery time (12 days).
8
Q
Rafnsson
What did they find?
A
- Studied 1500 flight attendants and found that those who had been flying for over 5 years had double the risk of breast cancer.
9
Q
Recht
What did they find?
A
- Found that over 3 years, an American baseball team won 37% of games when travelling West to East, but when they travelled East to West, they won 44%.
10
Q
Lee and Martin
What did they find? What evolutionary theories of sleep does this support?
A
- Koala’s sleep for 19 hours a day, their diet is mainly eucalyptus leaves which have a low nutritional value.
- Energy conservation and predation (sleep high up in trees = no risk).
11
Q
Allison and Cicchetti
What did they find? What evolutionary theory of sleep does this support?
A
- Predators sleep more and animals that sleep in burrows are safer so sleep more.
- Predation theory.
12
Q
Gregor
What did they find? What evolutionary theory of sleep does this support?
A
- 60% of dreams contained a threat.
- Threat simulation theory.
13
Q
Hublin
What did they find?
A
- Sleepwalking concordance rate in children (MZ:55%, DZ: 35%). Adults (MZ:32%, DZ:6%).
14
Q
Bassetti
What did they find?
A
- 50% of sleepwalkers had a specific gene (variant of HLA) - only 24% of non sleepwalkers had this gene.
15
Q
Olivero
What did they find?
A
- Sleepwalking - more frequent in children
Inhibitory system is undeveloped - insufficient quantities of GABA.
Adult sleepwalking = result of inhibitory GABA mechanism remaining undeveloped.
