anarthria

n. a motor speech disorder characterized by an inability to speak because of damage to or disruption of the central nervous system. Individuals with anarthria cannot control the larynx and other muscles involved in producing speech sounds; other language functions generally are unaffected. The condition is distinct from dysarthria, which is a difficulty in speaking coherently. —anarthric adj.

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Psychology term of the day

December 26th 2024

descending tract

a bundle of nerve fibers that carries motor impulses from the brain to the spinal cord. There are three major descending tracts: the corticospinal tract, vestibulospinal tract, and reticulospinal tract. Also called descending pathway. Compare ascending tract.