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z. Neuro Class > Limbic System ppt 23 > Flashcards

Limbic System ppt 23 Flashcards

1
Q

What is the limbic system involved in?

A

emotion, memory, attention, feeding, and mating behaviors.

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2
Q

What is the limbic system comprised of?

A 
Parahippocampal Gyus
Cingulate Gyrus
Subcallosal Gyrus
Cingulum
Hippocampus
Amygdala
Septal Nuclei
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3
Q

Paper Circuit- MTCH

A

Mamilary Bodies
Thalamus
Cingulate Cortex
Hippocampus

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4
Q

Function of the parahippocampus gyrus

A

Spatial memory

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5
Q

Function of the cingulate

A

HR bp attention and emotional processing

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6
Q

Function of Hippocampus

A

Longterm Memory

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7
Q

Function of the Amygdala

A 
Anxiety
Agression
Fear Conditioning
Emotional Memory
Social cognition
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8
Q

Function of Mammilary body

A

Memory

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9
Q

Function of the Nucleus accumbens

A

Reward
ADDDICTION
dopa

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10
Q

Where is avoidance processed?

A

lateral posterior hypothalamus,
dorsal midbrain
entorhinal cortex

Leave, Postpone hypothalamus
Dont Move
Evoid

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11
Q

What is motivation

A

and internal signal the shapes voluntary behavior

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12
Q

Where is fear processed?

A

Hypothalamus and Amygdala

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13
Q

Where is anxiety processed?

A

Frontal part of temporal lobe. (T)remble

α2-GABAA receptors
Benzodiazepine act by increasing chloride

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14
Q

What is rage?

A

person looses temper in response to a minor stimulus.

Ventralmedial hypothalamus

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15
Q

Placidity

A

meh. amygdaloid

bilateral- permentant placidity

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16
Q

Aggression

A

Violent rage

Fight or flight response, rage & aggression are fighting behaviors that can be elicited by stimulation of hypothalamic & amygdala nuclei.

17
Q

Male Sexual Activity

A

Lesion of neocortex inhibits sexual behavior.

Bilateral lesion of limbic system & destruction of amygdala- hypersexuality

18
Q

Female Sexual Activity

A

Lesion of anterior hypothalamus abolishes sexual activity in animals.

19
Q

What is Kluver Busy Syndrome?

A

Decreased aggression, visual agnosia. INCREASED SEXUALITY
hyperPhagia& hyperOrality.
Hypermetamorphosis

20
Q

Causes of Kluver Bucy in humans

A

Bilateral surgical removal of temporal lobes
Cerebral atrophies
Meningoencephalitis due to toxoplasmosis, herpes simplex or AIDS.

21
Q

Damage to the Hippo or Amygdala cause by

A

rarely occurs through vascular accidents.

likely cause: Trauma and infectious or toxic deficits or dysfunction involving limbic system structures.

22
Q

Lesion of hippo and amygdala

A

deficits in short-term memory

Changes in emotionality, including feelings of fear, anxiety, aggression, and rage

Seizures

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