Chapter 5.1 Flashcards
Consciousness
-our awareness of internal and external stimuli
-our subjective awareness of the world
Circadian Rhythm
-cyclical changes that occur on a 24-hour basis
-hormone release
-brain waves
-body temperature
-drowsiness
Suprachiasmatic Nucleus (SCN)
-biological clock
-in the hypothalamus
-controls our level of alertness
-signals pineal gland to release melatonin
Average Amount of Sleep Needed/Day
-7-10 hours
-infants need 16h
Sleep Deprivation
-missing a period or restful sleep
-over one or more days
Sleep Debt
-accumulated sleep loss over multiple days
Rapid Eye Movement (REM)
-darting of the eyes underneath closed eyelids during sleep
non-REM Sleep
-stages 1-4 when rapid eye movements do not occur
-dreaming is less vivid and frequent
Before Sleep
-you are active then get drowsy
Beta waves
-brain waves
-12-13 cycles/second
-awake and alert
Alpha Waves
-brain waves
-8-12 cycles/sec
-relaxed and drowsy
Stage 1: Light Sleep
-lasts only 5-10 mins
-changes from alpha/beta waves to THETA waves
-myoclonic jerks and hypnagogic imagery
-confused state of mind
Theta Waves
-slow brain waves
-4-7 cycles/sec
Hypnagogic Imagery
-scrambled, bizarre, dream-like images
-in and out of consciousness
Myoclonic Jerks
-sudden jerky movements
-startled or falling limbs