Motor control Flashcards
What are the 3 steps leading to the performance of a voluntary movement?
Identification of task
Planning
Execution
What aspects of motor control can the cerebral cortex control?
Change intensities of different commands and modify timings
What aspects of motor control can the brainstem control?
Maintain axial tone for standing
Where is the initiation of movement first present?
Posterior parietal cortex
Where does information from the posterior parietal cortex go?
2 loops
1 straight to the basal ganglion nucleus 1 to the pontine nucleus
Describe the cerebellar loop of motor control?
From posterior parietal cortex to pontine nucleus to the cerebellar hemisphere to the deep cerebellar nucleus to the thalamus
Where does information from the front he thalamus go?basal ganglion nucelus go?
To the thalamus where it converges with cerebellar loop
Where does information
Premotor cortex to supplementary motor cortex to primary motor cortex and follows the corticospinal or corticobulbar tract
Where does the reticulospinal tract originate and what is its route through the brain?
From pontine nucleus to cerebellar hemisphere to red nucleus to reticulospinal tract
What is the reticular formation?
A set of interconnected nuclei located throughout the brainstem
What are the 2 functions of the reticular formation?
Premotor and modulatory
What descending pathway originates from the reticular formation?
Reticulospinal tract
What does the pontine reticulospinal pathway control?
Extensor LMNs
What does the medullary reticulospinal pathway control?
Flexor LMNs
What type of movement does the paramedic reticular nucleus regulate?
Walking
