nature & lifespan of sleep
- Created by: elliegmullins
- Created on: 20-05-14 21:12
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- NATURE OF LIFESPAN & SLEEP
- INFANCY
- 16 hrs - immature versions - active & quiet sleep (half of sleep active) wake every hour or so (cycles less than adults 90 min)
- PREMATURE babies spend 90% in active sleep - brains need to mature
- EVOLUTIONARY APPROACH - infant sleep patterns evolved so parents can get on with daytime chores
- 16 hrs - immature versions - active & quiet sleep (half of sleep active) wake every hour or so (cycles less than adults 90 min)
- CHILDHOOD
- 12 HRS - EEG patterns similar to adults - parasomnias common e.g. night terrors
- INDIVIDUAL DIFFERENCES - E.G. CULTURAL DIFFERENCES - ISRAELI CHILDREN SLEEP 9 HRS AV
- 12 HRS - EEG patterns similar to adults - parasomnias common e.g. night terrors
- ADOLESCENCE
- Sleep INCREASES - boys ******/ejaculate - PHASE DELAY - go to sleep later, wake up later
- HORMONE CHANGES - sex hormones released at night explain sleep disruption - symptoms experienced in adolescence- moodiness
- CONSEQUENCE of phase delay - poor attention span at school - adjust school day
- Sleep INCREASES - boys ******/ejaculate - PHASE DELAY - go to sleep later, wake up later
- ADULTHOOD
- 8 HRS - 25% rem - inc in sleep disorders - cycle 90 mins
- MORE SLEEP NOT GOOD thing - more than 10 hrs, increased mortality risk 30%
- 8 HRS - 25% rem - inc in sleep disorders - cycle 90 mins
- OLD AGE
- NAPS, PHASE ADVANCE - sleep earlier, wake earlier - DECREASE in SWS(5%) & REM(20%)
- LESS SWS = LESS GROWTH HORMONE = OLD AGE SYMPTOMS = LOW BONE DENSITY
- More difficulty going to sleep - RWA - SLEEP QUALITY IMPROVED BY MELATONIN - INDUCES SLEEP BY INHIBITING BRAIN MECHANISMS THAT PROMOTE WAKEFULLNESS
- NAPS, PHASE ADVANCE - sleep earlier, wake earlier - DECREASE in SWS(5%) & REM(20%)
- INFANCY
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