Darley's contributions to the understanding, differential diagnosis, and scientific study of the dysarthrias

The work of Frederic L. Darley and his colleagues has done much to shape ap proaches to the clinical diagnosis and understanding of the dysarthrias and the scientific study of speech production. From the perspective of the spe ech pathologist and the perspective of the speech scientist, this paper exa mines Darley's contributions to the clinical diagnosis and management of th e dysarthrias, to the localisation and diagnosis of neurologic disease, to descriptions of the perceptual representations of disordered speech, and to efforts to integrate information about disordered neural control of speech with information about the normal neural control of speech. Gaps in knowle dge and directions for future work in each of these areas are also discusse d.