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  • Title: Effects of speech rate on the absolute and relative timing of apraxic and conduction aphasic sentence production.
    Author: McNeil MR, Liss JM, Tseng CH, Kent RD.
    Journal: Brain Lang; 1990 Jan; 38(1):135-58. PubMed ID: 2302543.
    Abstract:
    The purpose of this investigation was to provide a constructive replication of the Kent and McNeil (1987, In Phonetic approaches to speech production in aphasia and related disorders. San Diego: College-Hill Press) study of the speech timing characteristics of apraxic and conduction aphasic speakers. Acoustic analysis was used to obtain absolute utterance durations, segment durations, and vowel formant trajectories from utterances produced under control, fast, and slow rate conditions. Segment-to-whole ratios and slope values were calculated. Results support the hypothesis presented by Kent and McNeil (1987) that there is a phonetic-motoric component contributing to the speech patterns of both the apraxic and conduction aphasic speakers sampled. Theories of rate control in normal and disordered speakers are discussed.
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