Sleeping & Dreaming Flashcards
(18 cards)
affects of having too little sleep
weak immune systems, little focus, increased in BMI, depression
circadian rhythm
around a day erythema e.g sleep wake cycle (period of being asleep & awake)
ultradian rhythms
lasting less than 24 hours e.g sleep cycle
factors affecting how rhythms work: internal endogenous pacemakers
SCN realises melatonin when realises its natural cycle. ACTH released from pituitary gland releasing cortisol
external exogenous zeitgebers:
light, sensitive cells in retina given whether it’s day or night
evaluation of factors affecting bodily rhythms
internal: human research to support, blind man
external: practical applications, shift work and jet lag
siffre
to see what his sleep wake cycle was when deprives if external cue
every time he woke, he phone team to put on lights & took blood pressure, memory tasks
became depressed, desperate for company, STM affected, wanted to leave
body clock might be manageable with external zeitgeibers
evaluation: siffre
s: qualitative, detail, valid
w case study, one. person, ungeneralisable to wider community
insomnia
difficulty falling asleep/ waking up. lifestyle: jet lag, shift work, depression, caffeine
narcolepsy
no control over sleep, neurological, stress, genetic, lack of hypocretin
freud theory of dreaming:
anxieties are repressed in the unconscious mind. through talking about them, they could be released
manifest content
story that is being told
latent content
deeper meaning behind the story
dream work
mind keeping unconscious thoughts hidden during dreams. condensation: muddled ideas to build a story. displacement: something unimportant seems important elaboration: many idea appear as one
little hans
aim: help individual, build evidence for his theory
procedure: hans development logged since 3 years old. studies his drams, what he said, horse phobia
findings: horse phobia (dad), giraffe
evaluation: freud
s: qualitative data, rich in detail, valid
w: collected and interpreted by hans father & freud, bias, unreliable
hobson & mccarly: activation synthesis theory
neurons randomly firing, realising neurochemicals through our neurons, brain tires to make sense of it
evaluation: activation synthesis
s: evidence, pet scans reveal high activity in cats brian’s during rem sleep, valid
w:used animals, ungeneralisable to human
