lower motor neuron dysarthria
- dysarthria with severe lesions of motor nuclei of the lower pons or medulla oblongata that causes weakness or paralysis of the articulatory muscles; characteristics include a rasping, monotonous voice, and in advanced cases, shriveling and flaccidity of the tongue with laxness and tremulousness of the lips. Called also flaccid d.
Medical dictionary. 2011.
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