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Cortical vs. subcortical loops. Lateral inhibition in striatum.

Date post: 28-Dec-2015
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Cortical vs. subcortical loops
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Page 1: Cortical vs. subcortical loops. Lateral inhibition in striatum.

Cortical vs. subcortical loops

Page 2: Cortical vs. subcortical loops. Lateral inhibition in striatum.

Lateral inhibition in striatum

Page 3: Cortical vs. subcortical loops. Lateral inhibition in striatum.

Switching from one action to another

Page 4: Cortical vs. subcortical loops. Lateral inhibition in striatum.

Direct and indirect pathways

Page 5: Cortical vs. subcortical loops. Lateral inhibition in striatum.

Hyperdirect pathway

Page 6: Cortical vs. subcortical loops. Lateral inhibition in striatum.

Lesions that cause hemiballism

Page 7: Cortical vs. subcortical loops. Lateral inhibition in striatum.

Direct pathway

Page 8: Cortical vs. subcortical loops. Lateral inhibition in striatum.

Indirect pathways

Page 9: Cortical vs. subcortical loops. Lateral inhibition in striatum.

Loops through the basal ganglia

Circuit name Basal ganglia regions:

Connected with: Functions to control:

Skeletomotor Putamen; GPi, and SNpr

VL/VA; motor cortex, prefrontal cortex

Actions

Oculomotor Body of the caudate, SNpr

Intralaminar nuclei, MD, VA; frontal and parietal eye fields; superior colliculus

Gaze and orienting movements

Dorsolateral prefrontal

Head of the caudate, GPi and SNpr

VA, VL and MD; Executive function, strategic planning

Orbitofrontal Caudate, SNpr, ventral pallidum

MD; orbitofrontal cortex Motivation, ability to play well with others

Anterior cingulate aka limbic

Ventral striatum,ventral pallidum

MD; anterior cingulum Emotionality, motivated behavior


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