sleep / consciousness Flashcards
Circadian Rythm
natural body cycle that occurs over 24 hr period. 16 hr awake, 8 asleep. Can be affected by amount of exposure to light.
REM rebound
the body makes up for lack of REM sleep.
Sleep
unique state of consciousness, brain is still active but lacks awareness.
EEG
most used tool to measure brain activity while sleeping
Awake
beta brain waves
Drowsy
Alpha brain waves
Stage 1 NREM Sleep
mixture of alpha and theta brain waves. Associated with hallucinations and hypnic jerks
Stage 2 NREM Sleep
Sleep spindles, K complexes, theta brain waves, and beginnings of delta waves.
Stage 3 NREM Sleep
Mixture of theta and delta brain waves
REM
rapid eye movement
NREM
non rapid eye movement
Stage 4 NREM sleep
delta brain waves
REM Sleep
Fast, active brain waves accompanied by rapid eye movements
Suprachiasmatic Nucleus
activated by light and tells pineal gland to release melatonin.