Module 8 - Sleep and Dreams - Intro to Psychology

Sleep

recurring state of reduced awareness/activity in which the brain remains active

Circadian rhythm

approximately 24-hour bilogical clock

REM Sleep

sleep stages with rapid eye movements, vivid dreams, wake-like brain activity, and muscle paralysis

Alpha waves

relatively slow waves seen when awake and relaxed

Delta waves

large, slow brain waves associated with deep N3 sleep

SCN (The Suprachiasmatic nucleus)

hypothalamic structure that regulates the biological clock

Insomnia

persistent difficulty falling or staying asleep

Narcolepsy

Sudden attacks of overwhelming sleepiness

Sleep apnea

repeated stopping of breathing during sleep

Night terrors

intense fear episodes occurring during N3 sleep

Dream

sequence of thoughts/images/emotions during sleep

Manifest content

remembered/apparent dream storyline

Latent content

hidden meaning Freud believed was beneath the dream

REM rebound

increased REM after REM depriviation

Activation Synthesis

REM brain activity gets woven into a dream/story

Ghrelin

Hunger

Leptin

feeling full

happens during N3 sleep (slowest and largest brain waves)

delta waves

The lightest sleep

N1 sleep (deep or light sleep)

Brain activity during n2 sleep (short, rapid bursts of brain wave activity)

Sleep spindles