lower motor neuron dysarthria

low·er mo·tor neu·ron dys·ar·thri·a

dysarthria caused by dysfunction of the motor nuclei and the lower pons or medulla, or other neural connections, central and peripheral to the muscles of articulation.

lower motor neuron dysarthria

a disorder of articulation caused by weakness or paralysis of the articulatory muscles and marked by a rasping, monotonous voice and, in severe forms, shriveling and flaccidity of the tongue and laxness and tremulousness of the lips, seen in advanced cases of lesions of motor nuclei of the lower pons or medulla oblongata. Also called flaccid dysarthria.
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