state of conciousness– events of which you are aware
consious
state including things removed from awareness but still effect your body
noncoscious
what are the two parts of the unconcious
state of altered concious
sleep
why do we sleep?
brain restoration
what is teh superchiasmatic nucleus?
responsible for our 24 hour clock-hypothalamus
what is the basic rest activity cycle>
90 min cycle
graph explaining brain activty electrically
EEG
electrical activity of muscles
EMG
tells if the eyes are moving
EOG
electrocardiograph
EKG
what is the flow of brain waves?
Beta-Alpha-Theta-Delta
explain BETA waves
awake, normal muscle tone, stage 0- kinda sleepy, eyes closed, relaxed, vitals are irregular
explain ALPHA waves
stage 0- starts here vitals regulate
explain stage 1 of sleep
breath deepens, regulate vitals, hypnotic hullucinations
stage 2?
involves theta and sleep spindles-turns out all the senses except smell
stage 3?
Theta and Delta waves (less than 50 % detla) slow wave sleep
stage 4?
mostly Delta less Theta, deep sleep, moving around, mostly unresponsive, sleep walking takes place ins stage 4, lasting 30 minutes, slow wave sleep
explain REM
beta and theta waves, rapid eye movement, paralyzed, twitching, erection, females get ready for sex
how many dream periods happen nightly?
4-5
what are the theories for REM sleep?
why do we dream the content we do?
the pons generate random neural activities in the cerebral cortex which we precieve as random stimuli. our brain tries to make sense of random sights, sound, feelings, and real stimuli by weaving a story line
why do we daydream?
inhance creativity, help solve problems, help plan unfinished business, substitute for impulsive bahavior
what happpens when REM is supressed
affects memory, REM rebound-when sleeping you will go strait to REM, REM is suppressed by sleeping pills, and alcohol