Limbic system

Question 1

what does the limbic system do

Answer 1

acts as interface between internal and external environment

Question 2

what are the 2 main functions of the limbic system

Answer 2

learning and regulation/ translation of emotional state into appropriate behaviour

Question 3

how does the limbic system operate

Answer 3

influences endocrine system and ANS

Question 4

what does the nucleus accumbens do

Answer 4

pleasure centre

Question 5

how are components of the limbic system linked

Answer 5

via Papez circuit

Question 6

what are the components of the limbic system (7)

Answer 6

cingulate gyrus
hippocampus
Parahippocampal gyrus
anterior perforated substance
septal nuclei
uncus
amygdala

Question 7

what is the role of the hypothalamus

Answer 7

coordinates drive related behaviour

homeostasis

Question 8

what is the endocrine function of the hypothalamus

Answer 8

oxytocin and ADH produced here

Question 9

what would damage to the hypothalamus result in

Answer 9

disrupts homeostasis and drive-related behaviours

Question 10

what would a lesion of the anterior hypothalamus result in

Answer 10

inability to dissipate heat

Question 11

what would a lesion of the posterior hypothalamus result in

Answer 11

inability to retain heat

Question 12

what would a lesion of the lateral puberal nucleus of the hypothalamus result in

Answer 12

loss of hunger

Question 13

what would a lesion of the ventromedial nucleus of the hypothalamus result in

Answer 13

loss of satiety

Question 14

where are working memories stored

Answer 14

prefrontal cortex

Question 15

what is involved in the formation of new memories

Answer 15

mammillary bodies

Question 16

what is explicit memory

Answer 16

conscious memory

Question 17

what are the divisions of explicit memory

Answer 17

episodic (autobiographical) and semantic (knowledge about stuff)

Question 18

what areas are involved in episodic memory

Answer 18

hippocampus and midbrain

Question 19

what areas are involved in semantic memory

Answer 19

frontal temporal lobe

Question 20

what is implicit memory

Answer 20

unconscious memory e.g. sensory motor skills, driving

Question 21

what are the components of implicit memory (3 things)

Answer 21

skills/ habits
conditioned reflexes
emotional

Question 22

what areas are responsible for skill/ habit implicit memory

Answer 22

cerebellum and basal ganglia

Question 23

what areas are responsible for conditioned reflexes of implicit memory

Answer 23

cerebellum (and others)

Question 24

what areas are responsible for emotional implicit memory

Answer 24

amygdala

Question 25

what sort of matter is the amygdala

Answer 25

grey

Question 26

what is the role of the amygdala - general and specific

Answer 26

fear centre

• receives highly processed information
• produces instinctive emotional output
• responsible for emotional memory and fear

Question 27

what is the role of the hippocampus

Answer 27

episodic memory
construction of mental images and short term memory
spatial memory and navigation

Question 28

what are the 2 types of tract tracing

Answer 28

anterograde and retrograde

Question 29

what is anterograde tract tracing

Answer 29

transports from neuronal cell bodies to axon terminals

Question 30

what is retrograde tract tracing

Answer 30

transports from axonal terminals to neuronal cell bodies