Limbic System

Question 1

What is the primary output of limbic system

Answer 1

hypothalamus

Question 2

What types of innervation does the limbic system ahve

Answer 2

monoaminergic and cholinergic

Question 3

Is the hypothalamus fully functional at birth

Answer 3

yes

Question 4

What parts of the limbic system does dopamine have a diffuse effect on

Answer 4

nucleus accumbens
medial prefrontal cortex
septal nuclei
striatum

Question 5

What has sexual dimorphism

Answer 5

hypothalamus

Question 6

What are functions of the hypothalamus

Answer 6

emotiona lresponses
reproductive drive
endocrine
autonomic function

Question 7

What type of internal information does the hypothalamus get

Answer 7

autonomic and hormonal

Question 8

External information is not integrated into emotions unless it is processed by what

Answer 8

limbic system

Question 9

What is responsible for raw and reflexive emotionality of internal needs (pleasure, rage, aversion)

Answer 9

hypothalamus

Question 10

what assigns emotional significance to what is experienced

Answer 10

higher limbic structures

Question 11

Where is the amygdala located

Answer 11

temporal lobe

Question 12

what are the 3 major groups of nuclei found in the amygdala

Answer 12

basal-lateral
central
medial

Question 13

what is the largerst group of nuclei found in the amygdala

Answer 13

basal-lateral

Question 14

Why is the basal-lateral enlarged

Answer 14

it has to accommodate info flow from sensory cortex

Question 15

amygdalectomy results in what

Answer 15

flat affect, loss of fear, diminished responsiveness to stimuli

Question 16

what mediates facial expression perception

Answer 16

amygdala

Question 17

instructured fear

Answer 17

instead of receiing an unpleasant stimulus, person is told that they are going to experience something unpleaant

Question 18

observational fear learning

Answer 18

watching someone else experience the fear conditioning

Question 19

what helps you regulate the expression of fear response and how much fear you will respond with

Answer 19

medial prefrontal cortex

Question 20

what gives you contextual information about your fear

Answer 20

hippocampus

Question 21

Function of mirror neurons

Answer 21

understanding emotion in others

Question 22

what is the reinforcement limbic loop

Answer 22

nucleus accumbens -> ventral globus pallidus -> thalamus

Question 23

what is the nucleus accumbens a part of

Answer 23

ventral striatum

Question 24

what does the ventral tegmental area provide

Answer 24

dopamine

Question 25

how does cocaine addiction work

Answer 25

cocaine binds to dopamine transporter, blocks it causing a increase in baseline conc of dopamine acting on nucleus accumbus. loss of dopamine’s ability to represent natural reward

Question 26

how does addiction affect other systems

Answer 26

dampens cortical influence to reward system and increases limbic contribution

Question 27

what is the limbic loop

Answer 27

ventral stratum - pallidus - thalamus - cortex