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    Acoustic cry characteristics of infants exposed to methadone during pregnancy (2008)

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    12607388_Revised II SPAE-2008-106 methadone cry paper.doc (631Kb)
    Type of Content
    Journal Article
    UC Permalink
    http://hdl.handle.net/10092/4953
    
    Publisher's DOI/URI
    https://doi.org/10.1111/j.1651-2227.2008.01011.x
    
    Publisher
    University of Canterbury. Psychology.
    University of Canterbury. Department of Communication Disorders.
    ISSN
    0803-5253
    Collections
    • Science: Journal Articles [1139]
    Authors
    Quick, Z.
    Robb, M.P.
    Woodward, L.J.
    show all
    Abstract

    Objective: Infant cry characteristics reflect the neurological and medical status of the infant. This study compared the acoustic cry characteristics of infants born to mothers maintained on methadone during pregnancy with those of infants not exposed to methadone during pregnancy.

    Methods: At 42 weeks of post-menstrual age, 89 crying episodes ranging in duration from 1.15 to 1.97 sec were collected from 10 methadone-exposed (ME) and 10 non-methadone-exposed (NE) infants. Cry utterances were analysed acoustically using spectrographic displays and measures of cry utterance duration and fine-grained analyses of the fundamental frequency calculated for each cry.

    Results: No between-group differences were found on measures of cry duration or fundamental frequency. However, analyses of frequency perturbation showed that the cry utterances of ME infants were characterized by significantly higher levels of frequency perturbation than the cries of infants not exposed to methadone. These effects largely persisted after statistical control for the confounding effects of other maternal drug use during pregnancy.

    Conclusion: The crying behaviour of infants exposed prenatally to the synthetic opiate, methadone, is characterized by higher levels of vocal fold vibratory perturbation than NE infants. These findings suggest the possibility of early, subtle neurological vulnerability in this high-risk group of infants.

    Citation
    Quick, Z., Robb, M.P., Woodward, L.J. (2008) Acoustic cry characteristics of infants exposed to methadone during pregnancy. Acta Paediatrica, 98(1), pp. 74-79.
    This citation is automatically generated and may be unreliable. Use as a guide only.
    Keywords
    acoustic analysis; cry; infant; methadone; neurobehaviour; outcome
    ANZSRC Fields of Research
    11 - Medical and Health Sciences::1114 - Paediatrics and Reproductive Medicine::111403 - Paediatrics
    17 - Psychology and Cognitive Sciences::1701 - Psychology::170102 - Developmental Psychology and Ageing
    Rights
    The definitive version is available Wiley Online Library - onlinelibrary.wiley.com
    https://hdl.handle.net/10092/17651

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