Lesions
Damage to the descending motor pathways anywhere along the trajectory from the cerebral cortex to the lower end of the spinal cord gives rise to a set of symptoms called the "upper motor neuron syndrome". Signs may appear over days or weeks following brain or spinal cord damage, including muscle weakness, decreased motor control including a loss of the ability to perform fine movements, increased vigor (and decreased threshold) of spinal reflexes including spasticity, and an extensor plantar response known as the Babinski sign.
Read more about this topic: Upper Motor Neuron
Famous quotes containing the word lesions:
“Not that success, for him, is sure, infallible.
But never has he been afraid to reach.
His lesions are legion.
But reaching is his rule.”
—Gwendolyn Brooks (b. 1917)