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Flashcards in Limbic system Deck (33)
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1
Q

with the activation of the fight or flight response, we see an _________ sympathetic response with an _____ cortisol and TH

A

we see an enhanced sympathetic response with an increased cortisol and TH

2
Q

Limbic lobe forms a rim of cortex at junction between the _________ and __________

A

diencephalon and cerebral cortex

3
Q

circuit for the anatomical substrate for emotion. A closed loop

A

Papez

4
Q

what happens with individuals with tumors impinging upon the cingulum?

A

personality changes

5
Q

kluver-bucy

A

behavioral syndrome from removal of medial temporal lobes

6
Q

region involved in planning and choosing appropriate responses to life situations

A

orbital and medial prefrontal cortex

7
Q

nuclei involved as a pleasure center, cholinergic input to hippocampus

A

septal nuclei

8
Q

lesion of the sseptal nuclei

A

rage behavior

9
Q

includes nucelus accumbens and ventral pallidum. involved in the pleasure circuit

A

ventral basal ganglia

10
Q

limbic nucleus

A

dorsomedial nucleus of the thalamus

11
Q

looks like a seahorse

A

hippocampus

12
Q

Alzheimer’s disease implicates what structure of the limbic system. What do we see in these patients?

A

Hippocampus

we see them shrunk

13
Q

The Hippocampus is essential for

A

factual or declarative memory

14
Q

The hippocampal formation consists of the ________(contains stem cells) , the hippocampus proper and the subiculum.

when do we not see the stem cells?

A

dentate gyrus

we don’t see the stem cells in alzheimer’s disease

15
Q

Which neurons are highly susceptible to anoxia?

FYI: can be damaged in near drowning incidents, epileptic seizures, brief loss of O2 during surgical procedures

A

CA1

16
Q

Major route of information flow through the hippocampal formation is a ________ circuit.

A

one way

17
Q

loss of the hippocampus

A

retrograde amnesia and no laying down of new memories

18
Q

lesion to the CA1

A

anterograde amnesia

19
Q

what is required in the consolidation process?

A

sleep!!

20
Q

hippocampus has a direct or indirect role in emotion

A

indirect

21
Q

limbic structure most specifically involved with emotional experience.

A

amygdala

22
Q

amygdala made up of how many nuclei?

A

3

23
Q

Subnuclei of the amygdaloid complex:

  • Medial nucleus ——->
  • Basolateral nucleus ——->
  • Central ——>
A
  • Medial nucleus ——-> olfactory connections
  • Basolateral nucleus ——-> to cortex
  • Central ——>Hypothalamus and BS
24
Q

who plays a central role in fear and fear conditioning?

A

amygdala

25
Q

two pathways of the amygdala

A
  1. low road (QUICK!!!)- emotional stimulus goes through the sensory thalamus which then goes directly to the amygdala to show an emotional response
  2. high road- difference with the low road because it goes through the sensory cortex first
26
Q

amygdala when stimulated

A

fear, anxiety and aggression

27
Q

amygdala when lesioned

A

placid and fearless

28
Q

rare autosomal recessive condition characterized by Ca+ deposits – particularly in the amygdala

A

Urbach- Wiethe disease-

29
Q

explicit memory about emotional situation

A

hippocampal system

30
Q

implicit emotional memory and associations

A

amygdala system

31
Q

conditioned reflexes

A

cerebellum

32
Q

released during stress is thought to stabilize and strengthen memories

A

Noradrenaline

33
Q

which structure is impacted by chronic stress

A

hippocampus