M2L9 Sleep and Dream

a periodic, natural loss of consciousness — as distinct from /rather than unconsciousness resulting from a coma, general anesthesia, or hibernation

• Sleep
• hypnogogic sensations
• REM sleep behavior disorder
• Circadian rhythm

biological rhythm that requires about 24 hours to complete a full cycle.

• Circadian rhythm
• NREM-2
• sleep apnea
• NREM sleep

non-rapid eye movement sleep; encompasses / includes all sleep stages except for REM sleep

• NREM sleep
• NREM 3
• sleep walking (somnambulism)
• REM sleep

rapid eye movement sleep; a recurring sleep stage during which vivid dreams commonly occur

• REM sleep
• paradoxical sleep
• nightmare
• NREM-1

the transition into sleep, marked by slowed breathing and irregular brain waves; hypnogogic sensations/hallucination may occur

• NREM-1
• REM rebound
• Activation-synthesis theory
• hypnogogic sensations

life-like hallucinations that occur shortly after falling asleep; usually sensation of falling or floating

• hypnogogic sensations
• suprachiasmatic nucleus (SCN)
• Information processing theory
• NREM-2

experience sleep spindles and K complexes

• NREM-2
• Melatonin
• Sleep
• NREM 3

deepest sleep, your brain emits large, slow delta waves, and you are hard to awaken, growth hormone

• NREM 3
• restoration
• Circadian rhythm
• paradoxical sleep

REM sleep, when internally, the brain and body are active; while externally, the body appears calm and inactive

• paradoxical sleep
• memory consolidation theory
• NREM sleep
• REM rebound

the tendency for REM sleep to increase following REM sleep deprivation (created by repeated awakenings during REM sleep)

• REM rebound
• sleep deprivation
• REM sleep
• suprachiasmatic nucleus (SCN)