Sleep & Dreams Unit 5 Part 1 p. 175-192. Sleep How do we sleep? Why do we sleep? What happens if we don’t sleep?

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Presentation transcript:

Sleep & Dreams Unit 5 Part 1 p

Sleep How do we sleep? Why do we sleep? What happens if we don’t sleep?

Biological Rhythms and Sleep Circadian Rhythm Circadian rhythm –24 hour cycle –Temperature changes –Suprachiasmatic nucleus (SCN) melatonin

Biological Rhythms and Sleep Typical Nights Sleep

Why Do We Sleep? The Effects of Sleep Loss US Navy and NIH studies Age and sleep loss Chronic sleep loss Spring and fall time changes

Why Do We Sleep? The Effects of Sleep Loss

Why Do We Sleep? Sleep Theories Sleep theories –Sleep protects –Sleep helps recuperation –Memory storage –Sleep and creative thinking –Sleep and growth

Sleep Disorders Sleep disorders –InsomniaInsomnia –NarcolepsyNarcolepsy –Sleep apneaSleep apnea –Night terrorsNight terrors –Sleepwalking/ sleeptalking

Dreams How do we dream? Why do we dream?

Dreams What We Dream Dreams –Manifest contentManifest content –Latent contentLatent content

Dreams Why We Dream To satisfy our own wishes To file away memories To develop/preserve neural pathways To make sense of neural static To reflect cognitive development –REM reboundREM rebound

A Lifetime of Sleep

Critical Considerations:

Critical Considerations: Lacks any scientific support; dreams may be interpreted in many different ways.

Critical Considerations: But why do we sometimes dream about things we have not experienced?

Critical Considerations: This may be true, but it does not explain why we experience meaningful dreams.

Critical Considerations: The individual’s brain is weaving the stories, which still tells us something about the dreamer.

Critical Considerations: Does not address the neuroscience of dreams.