This video from the Rehab Training Network and the American Speech-Language-Hearing Association assists speech professionals in the identification of motor speech disorders. Flaccid dysarthia, spastic dysarthia, ataxic dysarthia, hypokinetic dysarthia, h yperkinetic dysarthia, unilateral upper motor neuron dysarthia, mixed dysarthias and apraxia of speech are illustrated in detail. Hosted by Dorothy Conflenti. Study guide available. Rehab Training Network.