Sleep Flashcards
Stage 1
theta waves
Stage 2
has sleep spindles and k-complexes
Awake/Alert
beta waves
Relaxed/Drowsy
alpha waves
Stage 3
Sleep Spindles and K-Complexes
- delta waves
Stage 4
delta waves
REM Sleep
rapid eye movement
- when most dreaming occurs
- loss of muscle tone (REM atone) which limits the ability to move
- suspension of homeostasis = increased variability in thermoregulation, respiration, circulation, and other functions
Circadian Rhythms
cycles of metabolic and behavioural processes which correspond to the rotation of the earth
- wakefulness is maintained by the brainstem and hypothalamus, and inhibition by a different part of the hypothalamus produces sleep
Nocturnal
awake at night, asleep during the day
- BATS, OWLS, RACOONS
Diurnal
awake during the day, asleep at night
- HUMANS
Crepuscular
awake at twilight (dawn and dusk), asleep at night and during the day
- CATS, RABBITS, FOXES
Cathemeral
irregular, frequent, or seasonally based cycles
- LIONS, LEMURS, COYOTES
Sleep Homeostasis
if you prevent them from sleeping, they will sleep longer to “make-up” the lost sleep
Unihemispheric Sleep
the ability to sleep one cortical hemisphere at a time, to facilitate breathing and avoid predation
ie; dolphins and birds
Parasomnia
abnormalities in their experiences of sleep, which may or may not be of medical concern