Basal Ganglia Flashcards

1
Q

4 parts of BG

A

Striatum
Globus Pallidus
Subthalamic Nucleus
Substantia Nigra

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2
Q

Lentiform nucleus refers to:

A

Putamen and globus pallidus

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3
Q

3 circuits in BG

A

Oculomotor
Motor
Limbic

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4
Q

Oculomotor circuit originates ____ and projects to ____

A

Frontal and supplementary motor eye fields –> Caudate

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5
Q

Function of oculomotor circuit

A

Saccadic Eye Movements

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6
Q

Motor loop pathway

A

Precentral motor and postcenral somatosensory areas –> Excites putamen –> inhibits globus pallidus –> activates vental lateral nucleus and supplemental motor area

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7
Q

Function of Motor Loop

A

Boosts activity in ventral lateral nucleus and supplmental motor area
Scale amplitude and velocity of movements
Reinforces selected patterns/suppresses conflicting patterns to prepare for movement

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8
Q

Limbic Circuit Pathway

A

Prefrontal and limbic areas of cortex –> BG & Prefrontal cortex

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9
Q

Function of limbic circuit

A
Organize behaviors (executive function)
Procedural learning
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