Psych sleep Flashcards
beta waves
alert state (fastest)
Alpha waves
relaxed
Theta waves
Transition from fast to slow
Delta waves
deep sleep (Slowest)
stage 1
light sleep
10-30 mins
alpha to theta
Hypnagogic images
see flashes of light, shadows or an aura of light
Hypnic jerk
involuntary spasim of your limbs
Stage 2
Moderate sleep
10-30 mins
50% of sleep
presence of sleep spindles
Sleep spindles
burst of activity of EEG waves
Stage 3
slow wave sleep
intro to delta waves
10 mins
stage 4
deep sleep
35-40 mins
delta wave dominant
sleep cycle
stage 1> stage 2> stage 3> stage 4> stage 3 > stage 2> REM
each cycle last’s about 90 mind
REM (Rapid Eye Movement) Sleep
eyes move rapidly under eyelids
could last hours
when a person is typically experiencing a dream
Sleep deprevation
loss of sleep
micro sleep
breif sidesteps into sleep lasting only a few seconds
Sleep debt
depriving oneself of sleep throut the week accumulates into sleep “debt” that we attemt to sleepoff during weekends
effects of sleep deprivation
cognitive
concentration, memory, and thinking clearly
effects of sleep deprivation
physical
eyelids, general fatigue, reaction time
effects of sleep deprivation
emotional
irritability, highly sensitive, depressed mood
How much sleep is needed?
7.5-8 hours a night average
biologically determined
Narcalepsy
Uncontrollable sleep attacks, inappropriate melotonane realise
Sleep Apnea
Temporary cessation of breathing, momentary reawakening
Insomnia
Persistant problems in falling or staying asleep
