the limbic system Flashcards

1
Q

What are the functions of the Amygdala

A

Emotions: processing and regulating fear, anxiety, joy, and others; meaning to emotions to provide a reaction or response to danger or stress to fight-or-flight.
Cognition: recognizes emotions in facial expressions; modulates pain (“pain matrix”) and acts on pain response. Risk-taking decisions.
Memories: Flashbulb memories, attach memories to emotions. Aids in long-term potentiation to increasing learning and memory formation.

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2
Q

what is the Allostatic Load Model?

A

The amygdala, hippocampus, and prefrontal are the primary mediators to determine a threat (a stressful event) resulting in the the physiological and behavioral responses to stress

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3
Q

What dxs have been noted with pts with Kulver- Bucy syndrome with lesion to amygdala?

A

social anxiety, anxiety, MDD, PTSD, autism, substance use dx.

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4
Q

What dx has been linked to the reduced volume of the anterior cingulate cortex

A

MDD

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5
Q

What modalities helped increase the volume of the anterior cingulate cortex, thus improving sxs of depression?

A

CBT

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6
Q

What will happen if the cingulate cortex is damaged

A

people experience pain but are not emotionally distressed by the pain

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7
Q

what are the functions of the cingulate cortex

A

motivation, memory, emotions, and emotional reaction to pain.

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8
Q

What are the functions of the Hippocampus?

A

MEMORY! transfers declarative memory from STM to LTM; Spatial memory

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9
Q

What would happen if the hippocampus is damaged

A

impairs episodic memory and spatial navigation (linked with Alzheimer’s). Retrieval of declarative memories is impaired when damaged or exposed to high stress and high cortisol levels (seen in Cushing’s).

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10
Q

What dxs are likely to be seen if there is hippocampus abnormalities

A

MDD, Bipolar, schizo, and PTSD.

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