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neuroanatomy > limbic system > Flashcards

limbic system Flashcards

1
Q

limbis borders

A

diencephalon

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2
Q

cortical association areas

A 
temporal
parietal
cingulate
olfactory
prefrontal
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3
Q

procedural/implicit memory

A

habits
skills
sensorimotor adaptations

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4
Q

emotional memory

A

conditioned preferences or aversions

memory modulation

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5
Q

declarative/explicit memory

A

episodic and semantic conscious recollections

flexible expression

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6
Q

positive primary reinforcers

A

light touch, food, smell, sex, unconditioned reinforcer

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7
Q

negative primary reinforcers

A

pain

hunger

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8
Q

amygdala and hippocampal formation gets inputs from

A

limbic association cortex
-temporal lobe, orbital gyri, cingulate gyrus

heteromodal cortex
-prefrontal association cortex, pareital temporal occipital cortex

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9
Q

hippocampus involved in

A

explicit memories

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10
Q

hippocampus works with

A

entorhinal cortex

-inflow to hippocampus

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11
Q

explicit memories is

A

conscious recollection of facts, spatial memory

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12
Q

memory consolidation

A

processes whereby initially labile memories become permanent

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13
Q

long term memory resides in

A

higher order association areas of cerebral cortex

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14
Q

long term memory processed by

A

hippocampal formation

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15
Q

korsakoff syndrome

A

destruction of mammilary bodies and medial thalamus

memory loss

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16
Q

septal nuclei regulates

A

motivated behavior
-reproduction and feeding

hippocampal formation during active behavioral states

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17
Q

pleasure is release of

A

dopamine in nucleus accumbens

18
Q

reward system originates from

A

ventral tegmental area

19
Q

reward system sends dopaminergic projections to the

A

nucleus accumbens
prefrontal cortex
dorsal striatum

20
Q

nucleus accumbens receives excitatory inputs from

A

prefrontal cortex
hippocampus
thalamus
amygdala

21
Q

ventral tegmental area sends dopamine projections to

A

nucleus accumbens

22
Q

dopamine pathway functions

A 
reward 
pleasure, euphoria
motor function
compulsion
perserveration
23
Q

serotonin pathway functions

A

mood
memory processing
sleep
cognition

24
Q

inputs to amygdala arrive in

A

basolateral nuclei

25
Q

what is central nucleus of amygdala

A

output nuclei sending projections out for emotional expression

26
Q

2 ways sensory inputs arrive in amygdala

A

thalamus

sensory/association cortex

27
Q

what kind of info come from thalamus to amygdala

A

less processed info, more primitive emotional responses such as startle and fear

28
Q

what kind of info comes from sensory cortex to amygdala

A

info more cognitively processed, more subtle emotion like anxiety

29
Q

emotional stimuli received by ___ and passed to ___

A

BLA

central nucleu

30
Q

in prefrontal and cingulate cortex amg proves

A

basic emotional valence

decision making

31
Q

in hypothalamus….

A

autonomic resp initiated and CRH released to initiate HPA response

32
Q

in midbrain __ produces defensive behaviors and ____

A

PAG

hypoalgesia

33
Q

damage to amygdala

A

inability to recognize facial expressions like fear

inability to recognize emotional content of speech

34
Q

3 components of amygdala

A

central nucleus
cotrticomedial nucleus
basolateral nucleus

35
Q

what does basolateral nucleus do

A

attaches emotional significance to stimuli

36
Q

what does central nucleus do

A

mediates behavioral responses to emotional stimuli

37
Q

what does cotricomedial nucleus do

A

olfactory perception-plays role in behaviors triggered by olfactory stimuli

38
Q

dopamine in limbic system

A

synapse on areas involved in emotions, learning, memory

schizophrenia

39
Q

serotonin

A

synapse on areas involved in mood

anxiety and OCD

40
Q

noradrenergic neurons

A

depression

41
Q

cholinergeric neurons

A

alzheimers begins with loss of cholinergic neurons in basal forebrain

neuroanatomy (11 decks)

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