2G. Sleep and Dream Flashcards
rests muscles, decreases metabolism, reorganizes synapses, strengthens memories, and removes waste from the brain
sleep
causes stronger stress reactions, mental health issues, poor performance, accidents, and immune activation
sleep deprivation
body temperature drops slightly during sleep, saving energy; animals sleep more during food shortages or hibernate
energy conservation
improves memory and cognition
sleep
TRUE OR FALSE: if you learn something and then go to sleep, even a nap, your memory solidifies and may become better than it was before sleep
true
a nap that includes a ___ sleep-enhanced performance on certain kinds of creative problem-solving
REM
depends on highly synchronized sharp wave ripples that transfer information from the hippocampus or thalamus to the parietal and frontal cortex
knowledge storage
who gets more sleep: infants or adults?
infants
hours of sleep for young adults
9 hours or more
more tightly regulated
NREM
represents the brain’s effort to make sense of sparse and distorted information
dream
begin with periodic bursts of spontaneous activity in the pons - the PGO waves previously described that activate parts of the cortex
dream
dream origins
brain motivations, memories, and arousal
aroused cerebral cortex creates vivid imagery without sensory input
hallucinatory perception
dreaming without recalling content, linked to low posterior parietal cortex activity
white dreams
