PSYC 110 Study Guide - Final Guide: Suprachiasmatic Nucleus, Nucleus Accumbens, Ghrelin
29 Jun 2018
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Hypothalamus has an arcuate nucleus which releases appetite suppressing and stimulating
neurons that are slow acting and produce hormones such as ghrelin which makes one feel
hungry and leptin which makes one feel full
Wanting
Appetitive Behavior
Liking
Consummatory Behavior
Reinforcement
Effect of reward on learning
Intracranial Self Stimulation
positive reinforcement created by electrocuting portion of the brain
nucleus accumbens
collection of neurons within the striatum
Preservation and Protection Theory of Sleep
sleep came about in evolution to preserve energy and protect individuals during times of day
when there is little value in being awake
Body-Restoration Theory of Sleep
body wears out during the day and sleep is needed to put it back in to shape
Brain-Maintenance Theory of REM Sleep
REM sleep provides regular exercise to groups of neurons in the brain. maintaining these
circuits and consolidating new learning.
sleep
a state involving relative unresponsiveness to the environment
EEG records divide sleep into stages. Which stage is the deepest?
Stage 4 is the deepest.
Sleepers progress through sleep stages in approximately 90 minute cycles. What do these look
like?
light to deep and rapidly back to light
REM Sleep
the type of sleep which occurs at the transition between cycles of sleep
most dreams occur in REM sleep and most sleep thought occurs in non-REM sleep.
What acts as an internal clock for sleepiness and wakefulness? What synchronizes this internal
clock?
suprachiasmatic nucleus in the hypothalamus.
light :)
affect (the feeling aspect of emotion) can vary in
degree of arousal and degree of pleasantness or unpleasantness
is there a consensus on how to classify emotions?
nope
James's theory of peripheral feedback
peripheral bodily reactions precede and cause emotions
Document Summary
Hypothalamus has an arcuate nucleus which releases appetite suppressing and stimulating neurons that are slow acting and produce hormones such as ghrelin which makes one feel hungry and leptin which makes one feel full. Intracranial self stimulation positive reinforcement created by electrocuting portion of the brain nucleus accumbens collection of neurons within the striatum. Preservation and protection theory of sleep sleep came about in evolution to preserve energy and protect individuals during times of day when there is little value in being awake. Body-restoration theory of sleep body wears out during the day and sleep is needed to put it back in to shape. Rem sleep provides regular exercise to groups of neurons in the brain. maintaining these circuits and consolidating new learning. sleep a state involving relative unresponsiveness to the environment. Sleepers progress through sleep stages in approximately 90 minute cycles. What do these look like? light to deep and rapidly back to light.
