1.5c - Sleep: Sleep Loss, Sleep Disorders, and Dreams

NREM-3 = deepest sleep stage!

insomnia

recurring problems in falling or staying asleep (3 months symptoms!)

narcolepsy

a sleep disorder characterized by uncontrollable sleep attacks. The affected person may lapse directly into REM sleep, often at inopportune times

sleep apnea

a sleep disorder characterized by temporary cessations of breathing during sleep (NREM-3) and repeated momentary awakenings

REM sleep behavior disorder

a sleep disorder in which normal REM paralysis doesn’t occur; instead, twitching, talking, or even kicking or punching may occur, often acting out one’s dream
*move around violently/complex muscle movement instead of muscle atonia

dream

a sequence of images/emotions/thoughts passing through a sleeping person’s mind

REM rebound

the tendency for REM sleep to increase following REM sleep deprivation —deprived = have more next time

4 Dream theories

Information processing/consolidation: sort out day’s events, consolidate memories

Physiological: develop/preserve neural pathways

Neural activation/activation synthesis: brain makes sense of neural “static” by weaving it into a storyline

Cognitive development: reflects the dreamer’s level of development (knowledge, understanding)

Sleepwalking

aka somnambulism, getting up/walking around during deep sleep (NREM-3)