Limbic System

Question 1

HOME

Answer 1

homeostasis
olfaction
memory
emotion

Question 2

limbic lobe

Answer 2

cingulate gyrus

parahippocampal gyrus

Question 3

limbic system

Answer 3

anatomical substrate for drive-related and emotional behavior

Question 4

neocortex

Answer 4

consciousness, perception

Question 5

hypothalamus

Answer 5

autonomics

Question 6

reciprocal input

Answer 6

with limbic system

-to neocortex and hypothalamus

Question 7

components of limbic system

Answer 7

cingulate gyrus and cingulum
parahipocampal gyrus - uncus
hippocampus
amygdala - deep to uncus
septal region
hypothalamus

Question 8

septal region

Answer 8

basal forebrain

Question 9

papez circuit

Answer 9

cingulate gyrus
hippocampus
hypothalamus

neocortex / limbic system / hypothalamus

Question 10

papez circuitry

Answer 10

hippocampus to mamilary body
-mammilothalamic tract

mammilary body to anterior thalamic nucleus

anterior thalamic nucleus to cingulate cortex

cingulate cortex to entorhinal cortex

entorhinal cortex back to hippocampus

Question 11

olfactory input to limbic system

Answer 11

hippocampus and amygdala

-small in humans

Question 12

neocortical input to limbic system

Answer 12

temporal association cx
-hippocampus and amygdala

frontal association cx
and parieto-occipital cx
-cingulate gyrus

Question 13

ouput of limbic system

Answer 13

from hippocampus and amygadala

• to hypothalamus
• then to basal forebrain
• then to prefrontal cortex
• conscious thoughts

also hypothalamus to autonomics and physiologic response

Question 14

basal forebrain

Answer 14

gateway for limbic system flow to cortex

-lesion - very little limbic system to cortex

Question 15

frontal lobotomy

Answer 15

instrument through orbit
-lesion basal forebrain

cuts off limbic sytem connection to cortex

no emotion to cortex

Question 16

emotion

Answer 16

mental state with measureable physiologic parameters and observable behavior

Question 17

feeling

Answer 17

subjective assessment of emotion

patient assessment

Question 18

affect

Answer 18

conscious appreciation of emotion and outward expression

Question 19

mood

Answer 19

sustained emotional state

-greater than weeks

Question 20

basic emotions

Answer 20

fear
anger
happiness
grief
disgust

Question 21

2 components of emotion

Answer 21

conscious feeling
-cortical

physiological change
-ANS, hypothalamus

Question 22

emotion connections?

Answer 22

between neocortex, limbic system, hypothalamus

driven by sensory input**

Question 23

somatic marker hypothesis

Answer 23

emotion starts with limbic systems response to INPUT

cortex creates cognitive responses

Question 24

central role of amygdala

Answer 24

fear and anger

strong emotion - improved memory

ability to recognize emotions

Question 25

primary input to amygdala

Answer 25

basolateral nucleus

Question 26

primary output to amygdala

Answer 26

central nucleus

Question 27

emotional memory

Answer 27

in amygdala

beta-adrenergic receptors

Question 28

beta-blockers

Answer 28

to decreased PTSD

Question 29

basal forebrain

Answer 29

decision making in regard to social behavior

Question 30

loss of respect for social conventions

Answer 30

loss emotional knowledge

lesion of basal forebrain

Question 31

prioritizing behavior in social context

Answer 31

basal forebrain

Question 32

phineas gage

Answer 32

hit with railroad spike

-lost basal forebrain

Question 33

modulatory systems

Answer 33

serotonin
NE
dopamine
ACh