chapter 5 Flashcards
circadian rhythm wake drive
naturally occurring 24 hour cycle. humans have near 24 hour pacemaker
two-process model of sleep
process C/ circadian rhythm and process S/ homeostatic sleep drive
Homeostatic sleep drive
chemical adenosine builds up when awake creating sleep drive
SCN
where the brain’s master clock is in the hypothalamus. removal of it disrupts the sleep cycle
2 main types of sleep
REM and NREM
stages of sleep
nrem1, nrem 2, nrem3/4, and rem
sleep cycles between rem and nrem
90 minutes
sleep spindles, slow(delta) waves
brainwaves of nrem sleep
Electroencephalography (eeg)
A neuroimaging method that records brain electrical
activity via electrodes placed on the scalp.
sleep depravation effects on learning
decreases hippocampal activity
hippocampal neocortical dialog model
hippocampus binds info and cortical connections strengthen. Process driven by sleep spindles and slow wave sleep
transcranial dcs, and targeted memory activation
stimulates brain waves during sleep. can help with memory improvement and physical therapy
Which sleep supports creativity?
rem - decreased prefrontal cortex activity
Freud’s theory of dreaming
dreams hold meaning
activation-synthesis model
dreams start as random, but meaning gets imposed after
