Psych: Sleep

CP Psychology Grade 11/12 CEC 1/13/26

reason 1 why we sleep

to restore

reason 2 why we sleep

to hibernate

reason 3 why we sleep

to clear minds of useless info

consciousness

state of awareness

stage 1

winding down; pulse slows; muscle relax

stage 2

eye roll side 2 side; most time spent here

stage 3

deep sleep; large delta waves; important for regeneration

stage 4

deepest sleep; dreaming; hard to wake some1 up

REM

rapid eye movement, high level of brain activity, relaxation of muscles

circadian rhythm

the rhythm of activity & inactivity; 24 hr cycle (jet lag)

insomnia

not getting enough sleep

sleep apnea

breathing interruptions; snoring

narcolepsy

suddenly falling asleep

night terrors

sleep disruption in stage 4; screaming

manifest content

what you remember

latent content

what your dream means

nightmares

intensity of brain activity to the stimulation of the parts of the brain responsible for emotional reactions

Sigmund Freud

belives dreams contain clues to what the dreamer is afraid to acknowledge

Nathaniel Kleitman

believes dreaming serves no function

Francis Crick

believes dreams remove unneeded memories

meditation

focusing attention to clear mind & relax

hypnosis

state of consciousness resulting from narrowed focus & heightened suggestibility

Theodore Barber

argues hypnosis not special, just suggestibility

Ernest Hilgard

believes there is something special abt hypnotic state

psychoactive drugs

chemicals that affect nervous system, result in altered state of consciousness

marijuana

has THC not addictive, ppl become psychologically dependent

hallucinogen

produces hallucinations

opiates

narcotics; opium, morphine & heroine