limbic system

Question 1

amygdala main afferent connections

Answer 1

inputs from olfactory cortex, septum, temporal neocortex, hippocampus, brainstem

Question 2

amygdala main efferent connections

Answer 2

stria terminalis to anterior parts of hypothalamus

Question 3

what and where is the amygdala anatomically

Answer 3

grey matter nucleus in front of the hippocampus, bilaterally either side of hypothalamus

Question 4

functions of amygdala

Answer 4

fear and anxiety, fight or flight

Question 5

why was trauma before airbags associated with the amygdala

Answer 5

as the temporal lobes would smash against the middle cranial fossa, causing bilateral damage

Question 6

name of syndrome associated with bilateral temporal lobe damage

Answer 6

Kluver-Bucy syndrome

Question 7

clinical features of Kluver-Bucy syndrome

Answer 7

basic view of world, so loss of fear, hyperorality (explore by putting things in mouth), hypersexuality, visual agnosia

Question 8

3 nuclei in amygdala

Answer 8

corticomedial nuclei (on top), basolateral nuclei (large everywhere else), central nucleus (lateral within basolateral nuclei section)

Question 9

3 structures associated with aggression

Answer 9

hypothalamus, amygdala, brainsteam (periaqueductal grey, which is the grey matter around cerebral aqueduct)

Question 10

what chemical is aggression associated with, and where is this within the brainstem

Answer 10

5-HT (serotonin) in raphe nuclei (midbrain and pons)

Question 11

what is the septum (septal nuclei)

Answer 11

membrane between lateral venticles anteriorly

Question 12

main afferent connections of septal nuclei

Answer 12

amygdala, olfactory tract, hippocampus, brainstem

Question 13

main efferent connections of septal nuclei

Answer 13

stria medularis thalami, hippocampus, hypothalamus

Question 14

2 functions of septal nuclei

Answer 14

reinforcement, reward