Sleep Flashcards
Sleep deprivation effects
INCREASE: stress, hunger, insulin resistance,
DECREASE: growth
Pathway of insomnia to death via drugs
Insomnia–> sleeping pills–> tolerance–> pills and alcohol–>drug interaction–>X_X
Sleep loss:
For every hour: inc coronary calcium by 16% Lowers men's testosterone Compromises immune system Difficulty learning or remembering Increas risk for Alzheimer's
Circadian rhythm:
INCREASE during night: growth hormone, cortisol
DECREASE: temperature, potassium, alertness
Suprachiasmatic nucleus (SCN)
Controls melatonin production and controls circadian rhythm.
Zeitgeber
Time giver
Whereeeee!!!!!!!!!!!!!!!!!!!!!!!!’mmnmmmng
Here there everywhereeeeeee
Electro- encephalogram (EEG)
Measure amplitude and frequency of brain waves in sleep.
Stages 2-4
slow wave sleep. sleep walking, talking.
Sleep cycles
At beginning of sleep: more stage 4; decrease so more REM Later in sleep cycle
During REM sleep
Increase heart rate, respiration, penile erection.
Story like dreams, impaired thermoregulation and muscle control (sleep paralysis)
Narcolepsy
Continually falling asleep
Cataplexy
Awake, but no muscle control (REM state)
Orexin.
______ in narcoleptics
Hormone in hypothalamus. Help keep ppl awake. Absent in narcoleptics.
Modafinil (Provigil)
Activates orexin receptors
