Conciousness Flashcards
consciousness
awareness of what’s going on around and inside
dual processing
brain processes info consciously and unconsciously simultaneously
priming
exposure to a stimulus has an unconscious influence on our following behavior
attention
a concentration of focusing mental activity
selective attention
focusing on one thing and ignoring everything else
cocktail party effect
ability to pay attention to certain voices and filter out others
divided attention
attempting to pay attention to 2+ things at a time
inattentional blindness
miss something because attention is focused elsewhere
change blindness
failure to notice substantial changes occuring in a scene
choice blindness
make a choice, actually given something else, don’t notice the change
sleep
naturally occuring periodic loss of conciousness
circadian rhythm
cycle of behavior and physiology that repeats every ~24 hours
chronotypes
individual variations of your body to sleep at different times than other
circadian low points
a drop in performance, increase in accidents
circadian low points time of day
1am-4am AND 1pm-4pm
electroencephalogram
measures electrical wave-like patterns of activity in the brain through the scalp
NREM 1
- lightest sleep
- common to see hallucinations
- generally only go into this stage when falling asleep
NREM 2
- slightly deeper than NREM 1
- spend most time here
- sleep spindles
sleep spindles
little bursts of activity in the brain when sleeping (NREM 2 characteristic)
NREM 3
- deepest sleep stage
- physiology (heartbeat, breathing, etc) declines
- most likely to sleepwalk, sleeptalk, bedwet in this stage
- delta waves
delta waves
slow wave sleep (NREM 3 characteristic)
REM
- paradoxical sleep
- paralyzed muscles for the most part
- story-like dreams
- time spent here increases as night progresses
- brain replays what it learned from the day to sort into long term memory
paradoxical sleep
appear to be in deep sleep but internally heart and blood pressure functions like you’re wake
animals and REM
almost all animals experience REM and dreams
stages of sleep order
NREM 1, NREM 2, NREM 3, NREM 2, REM (~90 minutes)
dreams
- often contain elements of your thoughts and actions from the day
stress effects on sleep
- dreams increase after stressful experiences and intense learning
- REM especially improves memory for emotional events
activation synthesis model
when asleep, bursts of activity in brain may randomly activate various memories so the cortex tries to make sense of this information by weaving a story
sleep deprivation
- cognitive, emotional, perceptual, physical effects
- amount of sleep per night impacts daily mood
- disrupts hunger hormones and impairs immune system (weight gain, slower healing)
