PSY 202 Lecture: Sleep
PSY 202 Lecture: Sleep 5094
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This 5 page One Day of Notes was uploaded by Julia Gladding on Monday December 15, 2014. The One Day of Notes belongs to 5094 at California State Polytechnic University taught by Ryujin, Laver in Fall2014. Since its upload, it has received 157 views. For similar materials see PSY 202 - General Psychology in Psychlogy at California State Polytechnic University.
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Date Created: 12/15/14
Monday October 13 2014 PSY 202 Week 4 Monday Lecture Sleep Dr Gary Laver I A BEDTIE STORY A Is there any excuse for falling asleep on the job BIOLOGICAL CLOCKS Pants keep identical rhythms in nature A Circadian once a day 1 Sleepwake cycle body temperature 2 Circadian rhythms a They are independent measures of time b They have their own daily cycles close to but not exactly 24 hours c They can be adapted to a 24hour schedule when exposed to cues d Without such cues the organism reverts to its own internal cycle 1 called free running B lnfradian less than once a day 1 menstrual cycle 2 hibernation C Ultradian ultraydeeun more than once a day 1 heanbeat 2 breathing FREE RUNNING A Absence of zeitgebers 1 plants 22 hours Monday October 13 2014 2 monkeys 245 hours 3 mice 23 hours 4 humans about 25 hours B Discovered by getting people to free run volunteer to live in caves for weeks at a time Crucial to success of experience no time cues of any time no natural light no social cues no clocks C Suprachiasmatic nucleus 1 in the hypothalamus The kernel above the crossing how light works light major time cue 139 3gt blind people complain of irregular sleep patterns 6 monitors melatonin D Laboratory studies 1 Weitzman amp Czeisler mid1970s a isolated unused hospital wing b participants had to be psychologically stable c frequent regular physiological measurements d twenty 24hour days to start then non routine e Most participants began free running 2 Bedtime drifting one hour each day IV WHY IS MONDAY MORNING SO AWFUL A Weekday nights 11 OOpm 7 am B Friday night to bet at 1 am C Saturday night to bed at 3 am D Sunday night to bed at 11 pm Monday October 13 2014 E Moral of the story keep sleep schedule regular F Two hour adjustment to the 25 hourday is easy to adjust Can comfortably move on 2 hours either side of the 25 hour clock V STAGES OF SLEEP A Falling asleep 1 sudden not gradual Dement 1974 B Stage1 1 lasts about 10 minutes 2 drifting thoughts 3 slow rolling of eyes 4 sleep spindles in EEG readings C Stage 2 1 lasts about 20 minutes 2 more synchronization 3 EEG responses to noise a Kcomplexes heard something but it not threatening D Stage 34 1 about an hour 2 extreme synchronization a delta waves 3 night terrors somnambulism sleep walking 4 dreaming E REM Rapid Eye Movement sleep 1 30 minutes to an hour 2 rapid eye movements 3 desynchronization 4 increased blood flow to brain Monday October 13 2014 5 paralysisloss of muscle tone a REM atonia rag doll 6 arousal of sex organs 7 dreaming F Changes in Cycling 1 through the night 2 through the lifespan Vl Theories of Dreaming A Psychoanalytic Sigmund Freud 1 wish fulfillmentdesire gratification 2 manifest what happened vs latent meaning content a dreams represent what you are thinking about unconsciously B ActivationSynthesis Hobson amp McCarley 1 Random signals emanate from the pons 2 These are interpreted by the cortex C Information Processing Evans Crick Cartwright 1 mental housekeeping memory consolidation 2 problem solving amp insight D Summary 1 Non REM dreams are about memory consolidation rote memorization 2 REM dreams talking facts and figures applying to new situation Vll SLEEP DEPRIVATION amp SLEEP DEBT A Symptoms of sleep deprivation 1 Fiandy Gardner 1964 264 hours 11 days 1 2 3 0quot39gt 3 Monday October 13 2014 impaired cognition hallucinations paranoia automatic behavior a lowlevel functioning eyes open brain asleep microsleep episodes a 23 second periods of sleep REM rebounds a immediate REM upon falling asleep Sleep Debt accumulated insufficient sleep over several days CULTURAL MYTH Sleep is dispensable cognitive deficits a 7 nights of 6 hours sleep 24 hours of no sleep b 7 nights of 4 hours sleep 48 hours of no sleep hormonal changes motor skill deficits a Awake 18 hours driving performance BAC of O5 o b Awake 21 hours driving performance BAC of O8 o
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