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- W1964224568 abstract "The present study explored articulator movement variability during voicing contrast acquisition. The purpose was to examine whether oral articulator movement trajectories associated with the production of voiced/voiceless bilabial phonemes in children became less variable over time.Jaw, lower lip, and upper lip movements were recorded longitudinally in six, 19 month-old children as they began producing the voiceless phoneme /p/. Displacement signals were time and amplitude normalized. The spatiotemporal index (A. Smith, L. Goffman, H. Zelaznik, S. Ying, & C. McGillem, 1995) was computed to examine the variability in movement trajectories across repeated productions of target utterances.Spatiotemporal variability of lip and jaw movements significantly decreased as children began producing the voiceless phoneme /p/. A significant negative correlation between the STI and the length of voice onset time (VOT) was also found in the voiceless productions in 4 of the 6 participants.Oral articulator movement variability is reduced in children across the stabilization of voicing contrast acquisition. Further, the relationship between VOT contrast production and movement variability suggests that a coordinate system between the oral and laryngeal articulators may be refined as children acquire the voicing contrast." @default.
- W1964224568 created "2016-06-24" @default.
- W1964224568 creator A5013859294 @default.
- W1964224568 date "2009-02-01" @default.
- W1964224568 modified "2023-10-08" @default.
- W1964224568 title "Changes in Articulator Movement Variability During Phonemic Development: A Longitudinal Study" @default.
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- W1964224568 doi "https://doi.org/10.1044/1092-4388(2008/07-0220)" @default.
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