AP PSYCH: sleep

polysomnography

sleep studies

what do polysomnographies measure?

heart rate, oxygen levels, and temperature. EEG measures brain waves and electrodes measure eye movements

how long do sleep cycles last

90-120 min

list the brain waves in order

beta, alpha, theta, delta

which brain wave is active when awake? (stage 1)

beta waves

which brain wave is active when relaxed

alpha

which stage of sleep is relaxation in?

light sleep (stage 1 of sleep)

brain wave active during light sleep?

theta waves

hypnagogoic jerk

occurs when RELAXED, yet awake - body fighting sleep

sleep spindles

occurs when in LIGHT SLEEP (theta): keeps asleep by blocking out stimulations; produced by the thalamus

brain wave active during deep sleep

delta waves

conditions that can occur while in DEEP sleep

bedwetting, sleepwalking, sleeptalking, etc.

what does REM sleep stand for

rapid eye movement sleep

what stage do dreams occur

REM (stage 5)

what is another name for REM and why

paradoxical sleep; bc brain is active while the body is nearly paralyzed

what is REM rebound

after sleep deprivation, body enters REM state quicker and stays there longer the following night(s)

Consciousness

awareness of sensations, thoughts, and feelings ("tip of iceberg")

Preconscious

info that is not in consciousness but can be brought into awareness (if attention is called to it)

Unconscious

processing that occurs w/o our awareness (repressing thoughts)

Circadian Rhythm

wake-sleep cycle; occurs ~24 hrs; controlled by hypothalamus

Melatonin

hormone that makes body tired

Non-24 hr

disorder that occurs in blind people because light isn't perceived; damages their sleep cycle

sleep theories

restoration, memory consolidation, info-processing, activation-synthesis, and evolutionary/adaptive

restoration theory

sleep theory: to restore body physically and grow + to flush out cortisol and adenosine

memory consolidation theory

sleep theory: to build "neural nets" and flush out useless info

evolutionary or adaptive theory

sleep theory: to conserve energy and protect

microsleep

brief sleep lasting only a few seconds

activation-synthesis theory

sleep theory: ur cerebral cortex is trying to interpret random electrical activity we have while sleeping

info-processing theory

sleep theory: dreams are a way to deal w/ and solve stress

insomnia

inability to fall asleep, stay asleep, or get adequate sleep

sleep apnea

repeated cessation of breathing during sleep

somnanbulism

sleep walking

what stage does somnanbulism occur

stage 3 = deep sleep

narcolepsy

sudden attacks of REM sleep

REM Behavior Disorder

muscle paralysis associated w/ REM sleep doesn't occur

list the stages of sleep (5)

1) awake, 2) relaxation, 3) light sleep, 4) deep sleep, 5) REM sleep