AP Psych sleep review

activation-information-mode

information received while awake, has impact on synthesis of our dreams

REM rebound

If less sleep one night, body makes up for it the next

suprachiasmatic nucleus

body's internal clock; sensitive to light (such as winter compared to summer), as light fades it tells pineal gland to release melatonin

night terrors 

Stage 4, rare, experience of extreme fear

stage 1 sleep (NREM)

theta waves increase, as alpha wave activity decreases; hypnogogic images, hypnic jerk

REM behavior disorder

most rare, mechanism that blocks movement of voluntary muscles fails, causing person to thrash and even act out dreams

somnambulism (sleepwalking), which stage does this occur?

Stage 4, movement or walking in sleep

alpha waves 

brain waves that indicate a state of relaxation or light sleep

waking consciousness

time when thoughts, feelings, and sensations are clear and organized and person is alert

sleep deprivation

any significant loss of sleep, resulting in problems in concentration and irritability

altered states of consciousness

a shift in the pattern of mental activity as compared to walking consciousness

manifest content

actual content of the dream itself

stage 2 sleep 

body temp drops, heart rate slows, breathing becomes more shallow and irregular

narcolepsy

disorder where person falls immediately into REM sleep during the day without warning

sleep spindles

brief bursts of activity lasting only a second or two

latent content

true meaning hidden within the content of the dream

circadian rhythm

a cycle of bodily rhythm that occurs over a 24-hour period

theta waves 

brain waves that indicate early stages of sleep

hypothalamus 

controls the wake cycle

REM

rapid eye movement; stage where eyes move rapidly and person is typically dreaming

hypnic jerk

as you drift off, body gets that sensation of falling

NON REM

stages of sleep that are not rapid eye movement; stages 1-4