limbic system

Question 1

what is the limbic system

Answer 1

bridge between sensory, autonomic and voluntary behavior

Question 2

limbic system is concerned which

Answer 2

feelings, emotions, and drive-related behaviors important to the survival of the species

Question 3

components of the limbic system

Answer 3

cingulate or parahippocampal gyrus
amygdala
hippocampus
septal nuclei
hypothalamus - mammillary bodies
reticular formation- midbrain
olfactory structures

Question 4

medial amygdala function

Answer 4

olfactory system

Question 5

central amygdala

Answer 5

hypothalamus and brainstem, important for expression of emotions (HPA axis)

Question 6

basolateral amygdala

Answer 6

connections with cortex

Question 7

inputs to limbic basal ganglia loop

Answer 7

amygdala, hippocampus, limbic cortex

Question 8

cortex projects to where in LBG loop

Answer 8

ventral striatum

Question 9

VS projects where in LBG loop

Answer 9

ventral pallidum

Question 10

VP projects where in LBG loop

Answer 10

dorsomedial thalamus

Question 11

DM thalamus projects where in LBG loop

Answer 11

back to cortex

Question 12

function of the LBG loop

Answer 12

actions and movements related to stimuli and expected reward
- significant role in addiction

Question 13

functional aspects of amygdala

Answer 13

emotional learning

Question 14

effect of bilateral amygdala removal

Answer 14

loss of emotional content of memories and reduced fear/aggression

Question 15

stimulation of amygdala

Answer 15

attentive, defensive, aggressive or fleeing
- humans become fearful

Question 16

amygdala and hippocampus regulates what

Answer 16

CRH neurons in the hypothalamus

Question 17

stress stimuli to the basolateral amygdala causes what

Answer 17

hypothalamic neurons to release CRH

Question 18

ACTH causes what

Answer 18

cortisol release from the adrenal gland

Question 19

ACTH effect on immune system

Answer 19

suppression of immune system

Question 20

Learning

Answer 20

acquisition of new info

Question 21

memory

Answer 21

retention of learned info

Question 22

engram

Answer 22

physical representation of location of a memory

Question 23

amnesia

Answer 23

serious loss of memory or ability to learn

Question 24

dementia

Answer 24

loss of cognitive or intellectual function

Question 25

3 functional elements of declarative memory

Answer 25

acquisition, storage and retrieval

Question 26

memories that are harder for form but less likely to be forgotten

Answer 26

non-declarative/procedural

Question 27

outcome of bilateral removal of hippocampus, adjacent temporal lobes

Answer 27

severe anterograde amnesia, but no loss of procedural memory

Question 28

inputs to hippocampus

Answer 28

cingulum, entorhinal cortex, olfactory bulb

Question 29

formation of emotional memories relies on

Answer 29

amygdala