Limbic System Flashcards

0
Q

Caudal system involved in ____

A

Memory

Visuospatial function

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1
Q

Rostral system of limbic system involved in ___

A

emotion

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2
Q

Anatomic systems involved in rostral limbic system: (5)

A
Olfactory system
Insula
Amygdala
Anterior cingulate cortex
Medial frontal cortex
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3
Q

Letinculostriate arteries supply (3)

A

Striatum
Globus pallidus
Internal capsule

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4
Q

Piriform cortex =

Fuction:

A

Uncus + amygdala + anterior parahippocampal gyrus

Olfaction

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5
Q

Lateral olfactory striae terminate in:

A

Piriform cortex

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6
Q

Medial striae terminal in:

A

Septal region

Anterior hypothalamus and anterior commissure

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7
Q

Insular cortex is involved in:

A

Taste
Experience of visceral pain
Affective/emotional qualities of taste, odor emotive sounds, visceral and somatic pain
Pleasant sensations

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8
Q

Pain centers: (4)

A

Postcentral gyrus: somatotopic location of somatic pain
Short gyri of insula: Emotional aspect of somatic and visceral pain
Amygdala: additional target for direct viscerosomatic pain signals
Periaqueductal gray area (PAG): additional target for direct viscerosomatic pain signals –> defensive behavior and main modulation

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9
Q

PAG as a pain center is important for:

A

defensive behavior and pain modulation

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10
Q

Major functions of amygdala: (4)

A
  1. Associative learning involving emotional stimuli
  2. Recognition of emotional stimuli
  3. Emotional responses
  4. Control of sexual behavior
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11
Q

Only component of amygdala that sends axons back to cortex

A

Basal and lateral component of amygdala

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12
Q

Receives majory of cortical inputs to amygdala

A

Basal and lateral component of amygdala

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13
Q

Sends axons to striatal structures (caudate, putamen, nucleus accumbens, central component of amygdala)

A

Basal and lateral component of amygdala

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14
Q

Power source of input to basal forebrain cholinergic neurons

A

Basal and lateral component of amygdala

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15
Q

Basal component of amygdala involved in:

A

association between emotive stimuli and neutral stimuli are made

16
Q

Amygdala connections back to cortex are involved in:

A

generating recognition

17
Q

Amygdala connections to striatum (central component) are involved in:

A

execution of emotive responses

18
Q

Central component involved in:

A

learning and expression of emotional behaviors (fear conditioning)

Generate stereotypic responses to unpleasant/threatening stimuli

19
Q

Corticomedial component of amygdala has a strong connection with:
Involved in:

A

Olfactory system and medial hypothalamus

Sexually dimorphic

Sexual behavior

20
Q

Kluver-Bucy syndrome

Signs: (5)

A

Classic syndrome associated with amygdala

  1. Psychic blindness: inability to detect emotional/social significance
  2. Hypersexuality
  3. Lack of fear
  4. Hyperorality
  5. Memory and learning deficits
21
Q

Infralimbic cortex involved in:

A

sadness and effects of anti-depressants

22
Q

2 components of parahippocampal gyrus

A

Entorhinal cortex: Organizing spatial information

Perirhinal cortex: multimodal memory storage area

23
Q

Hippocampus involved in:

A

Spatial and contextual memory
Episodic memory: recall familiar personal events
Object related information

24
Q

Lesion to anterior part of cingulate cortex results in:

A

Loss of social embarrassment

25
Q

Posterior part of cingulate involved in:

A

Self-reference

26
Q

Retrosplenial area involved in:

A

representing spatial or context-dependent memory

27
Q

Lesion to retrosplenial area of cingulate cortex results in:

A

loss of ability to navigate

Can’t place themselves in environmental context

28
Q

Regions involved in psychomotor epilepsy (4)

A

Amygdala
Hippocampus
Medial temporal lobe
Insula

29
Q

Symptoms of psychomotor epilepsy

A

Hallucination
Abnormal olfactory, taste, sexual sensation
Abnormal stereotypic movements of tongue, face, jaw
Amnesia
Aggression

30
Q

Infects only the limbic system, especially the temporal lobe

A

Herpes simplex virus

31
Q

Autism is a dysfunction in ____

A

cingulate and limbic striatum

32
Q

Alzheimer’s disease involves degeneration of ____

A
Parahippocampal gyrus (early) 
Hippocampus, amygdala