Motor syste6 - • Consists of 4 subcortical nuclei o...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Motor system: basal ganglia and cerebellum This note coves the role of the basal ganglia in motor control Motor function and the basal ganglia There are 4 main process of motor function: Execution: covering two main descending pathways Pyramidal tracts arising from motor cortex Extrapyramidal tracts originating in brainstem Control: how ongoing movement is corrected/modified Basal ganglia Along with cerebellum, forms the extrapyramidal motor system o
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: • Consists of 4 subcortical nuclei o Striatum (caudate nucleus, putamen, nucleus accumbens) o Globus pallidus (Gp) o Substantia nigra o Subthalamic nucleus • Basal ganglia loop o Primary input: cerebral cortex o Output: brainstem & via thalamus to prefrontal, premotor & motor cortices o No direct output to spinal cord • Role of basal ganglia o Damage can disrupt movements & also cause deficits in other neural functions – cognition, perception o Facilitate movement &/or suppress movement Act to reinforce selected motor pattern Suppress potentially conflicting motor patterns o Balance between direct & indirect pathways o Primarily functions through disinhibition...
View Full Document

This note was uploaded on 12/04/2011 for the course ANTHRO 2000 taught by Professor Monicaoyola during the Fall '10 term at Broward College.

Page1 / 2

Motor syste6 - • Consists of 4 subcortical nuclei o...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online