The ability of right- and left-hemisphere-damaged individuals to produce and interpret prosodic cues marking phrasal boundaries

Author(s): Pell, M. D., Leonard, C. L., Gordon, J. K.

Journal/Book: Lang Speech. 1997; 40: 43, Derwent Rd, Whitton, Twickenham, Middlesex TW2 7HQ, England. Kingston Press Services Ltd. 313-330.

Abstract: Two experiments were conducted with the purpose of investigating the ability of right-and left-hemisphere-damaged individuals to produce and perceive the acoustic correlates to phrase boundaries. In the production experiment, the utterance pink and black and green was elicited in three different conditions corresponding to different arrangements of colored squares. Acoustic analyses revealed that both left-and right-hemisphere-damaged patients exhibited fewer of the expected acoustic patterns in their productions than did normal control subjects. The reduction in acoustic cues to phrase boundaries in the utterances of both patient groups was perceptually salient to three trained listeners. The perception experiment demonstrated a significant impairment in the ability of both left-hemisphere-damaged and right-hemisphere-damaged individuals to perceive phrasal groupings. Results are discussed in relation to current hypotheses concerning the cerebral lateralization of speech prosody.

Note: Article Baum SR, Mcgill Univ, Sch Commun Sci & Disorders, 1266 Pine Ave W, Montreal, PQ H3G 1A8, CANADA

Keyword(s): brain damage; prosody; speech comprehension; speech production; UNILATERAL BRAIN-DAMAGE; SPEECH PROSODY; FUNDAMENTAL-FREQUENCY; AFFECTIVE CONTEXTS; VOWEL PRODUCTION; BROCAS APHASIA; THAI; INTONATION; COMPREHENSION; DURATION

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