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An extraneous vocal behavior in cerebral palsied speakers.

SummaryAn extraneous speech behavior, a prevocalization (PV), was analyzed spectrographically and phonetically in 14 cerebral palsied subjects. Seventy-one % of these subjects demonstrated PV usage. Frequency of PV occurrence and PV duration in msec, were not related. Phonetic analysis of PVs and initial word stop consonants implicated temporal inco-ordination in manner of articulation with generally intact control over place of articulation.