The study evaluated the degree of accuracy with which three groups of listeners (all speech language pathologists) could use perceptual analysis alone for identification of the following specific dysarthria types: flaccid, spastic, ataxic, hypokinetic, hyperkinetic chorea, hyperkinetic dystonia, and mixed. Listeners demonstrated minimal success in…

This investigation compared five parameters of phonatory function in an examination of the use of acoustic measures in differential diagnosis in 39 subjects in 3 neuropathological groups (Parkinson, Huntington, cerebellar ataxia) and a normal control group. Results indicated higher variability in perturbation in all the neuropathological groups.…

The clinical course of development of a 14-year-old girl with Rett Syndrome is outlined. Results indicated a general stagnation in gross and fine motor skills, self-help skills, communication, and cognition, beginning at approximately 15 months. No skills progressed beyond the 2-year level despite several years of intensive intervention.…

Part 1 of this paper recommends procedures and standards for the acoustic analysis of voice in individuals with dysarthria. In Part 2, acoustic data are reviewed for dysarthria associated with Parkinson disease (PD), cerebellar disease, amytrophic lateral sclerosis, traumatic brain injury, unilateral hemispheric stroke, and essential tremor.…

Reports describing subcortical apraxia of speech (AOS) have received little consideration in the development of recent speech processing models because the speech characteristics of patients with this diagnosis have not been described precisely. We describe a case of AOS with aphasia secondary to basal ganglia hemorrhage. Speech-language symptoms…

Changes in consonant and syllable-level error patterns of three children diagnosed with childhood apraxia of speech (CAS) were investigated in a 3-year longitudinal study. Spontaneous speech samples were analyzed to assess the accuracy of consonants and syllables. Consonant accuracy was low overall, with most frequent errors on middle- and…