Chapter 4: Consciousness Flashcards
Inactivity sleep theory
Inactivity would protect us from predators
Energy conservation sleep theory
Spend less energy/calories during sleep
Restorative/healing sleep theory
Healing takes place during sleep
Memory consolidation Sleep theory
We store our memories effectively during sleep
Sleep deprivation: Cognitive slowing
takes longer to think
Sleep deprivation: Cognitive rigity
lack of sleep kills creativity
Sleep deprivation: Decreased motivation
you dont care as much about poor performance
Circadian rhythm
24- Hour Cycle which brain & bodily function controlled by
What affects the circadian rhythm?
-Lightness/ Darkness cues
-Meal timing
Suprachiasmatic Nucleus (SCN):
like a daily timer for a lamp on a dimmer. can be programmed to be brighter/darker at different times of the day. LOCATED IN HYPOTHALAMUS
Alpha waves
awake and relaxed
Theta waves
Stage 1 & 2 sleep
Hypnagogic hallucinations
Dream of falling
stage 1 sleep
- very light sleep.
- breathing rate & muscles slow
-hypnagogic hallucinations
-myoclonic jerk
stage 2 sleep
- breathing & heart rate slows
- body temp drops
- sleep spindles (bursts of brain activity)
delta waves
Stages 3 & 4 sleep
- Deepest stages of sleep
- sleep walking & talking
REM Sleep
- brain activity & dreams occur
- rapid eye movement
- REM paralysis
Rapid eye movement
heart rate increases, breathing increases, sexual arousal
REM paralysis
skeletal muscles completely relaxed. paralyzed in a relaxed way
REM rebound
increase in rem sleep after a period of rem sleep deprivation
Insomnia
consistent difficulty falling asleep, staying asleep, or achieving high quality sleep
night terrors
brief sudden awakening where the person feels frightened. NON REM SLEEP
narcolepsy
sleep attacks
somnambulism/
Sleep Walking
walking while asleep
3% of people