Date post: | 28-Dec-2015 |
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Cortical vs. subcortical loops
Lateral inhibition in striatum
Switching from one action to another
Direct and indirect pathways
Hyperdirect pathway
Lesions that cause hemiballism
Direct pathway
Indirect pathways
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