Kategorier: Alle - motor - regulation - movement

av Inga Partlova 5 år siden

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The basal ganglia, a group of interconnected nuclei in the brain, play a crucial role in regulating both motor and non-motor activities. Key components include the subthalamic nucleus, lentiform nucleus, globus pallidus (

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Basal ganglia

Motor loop

Basal ganglia output is via the thalamus which feeds back to the cortex
Input to the basal ganglia comes from the associative and motor cortex
Modulate upper motor neurons in the motor cortex via a feedback loop

Movement

Increasing evidence suggests basal ganglia are also involved in non-motor tasks
Stimulate specific movements and inhibit unwanted movements
Basal ganglia are involved in the regulation of motor activity

Input to the B.G. motor circuit

Anatomy

Substantia nigra
Pars reticulata
Pars compacta
Subthalamic nucleus
Lentiform nucleus
Globus Pallidus

External (GPe)

internal (GPI)

Striatum
Putamen
Caudate