Acoustic cry characteristics of infants exposed to methadone during pregnancy

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dc.contributor.authorQuick, Z.
dc.contributor.authorRobb, M.P.
dc.contributor.authorWoodward, L.J.
dc.date.accessioned2010-11-29T19:57:46Z
dc.date.available2010-11-29T19:57:46Z
dc.date.issued2008en
dc.description.abstractObjective: 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.en
dc.identifier.citationQuick, 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.en
dc.identifier.doihttps://doi.org/10.1111/j.1651-2227.2008.01011.x
dc.identifier.issn0803-5253
dc.identifier.urihttp://hdl.handle.net/10092/4953
dc.language.isoen
dc.publisherUniversity of Canterbury. Psychology.en
dc.publisherUniversity of Canterbury. Department of Communication Disorders.en
dc.rightsThe definitive version is available Wiley Online Library - onlinelibrary.wiley.comen
dc.rights.urihttps://hdl.handle.net/10092/17651en
dc.subjectacoustic analysisen
dc.subjectcryen
dc.subjectinfanten
dc.subjectmethadoneen
dc.subjectneurobehaviouren
dc.subjectoutcomeen
dc.subject.anzsrcField of Research::11 - Medical and Health Sciences::1114 - Paediatrics and Reproductive Medicine::111403 - Paediatricsen
dc.subject.anzsrcField of Research::17 - Psychology and Cognitive Sciences::1701 - Psychology::170102 - Developmental Psychology and Ageingen
dc.titleAcoustic cry characteristics of infants exposed to methadone during pregnancyen
dc.typeJournal Article
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