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. 2015 Jun;3(1):53-68.
doi: 10.1123/jmld.2014-0054.

Longitudinal development of speech motor control: Motor and linguistic factors

Jenya Iuzzini-Seigel  1 , Tiffany P Hogan  1 , Panying Rong  1 , Jordan R Green  1
Affiliations

Longitudinal development of speech motor control: Motor and linguistic factors

Jenya Iuzzini-Seigel et al. J Mot Learn Dev. 2015 Jun.
No abstract available

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Figures

Figure 1
Figure 1
Stacked column graph showing the relative occurence of each movement type as a function of age. Children 15 months and younger typically produced prelinguistic vocalizations and spontaneous orofacial movments, whereas older children produced an increasingly larger proportion of words.
Figure 2
Figure 2
Facial marker configuration and kinematic lip shape time series data. Figure 2a shows data from a participant at 3 months age and 2b shows data for the same child at 54 months. Note that at 3 months age, horizontal spread and vertical opening both drive lip area as this child makes prelinguistic spontaneous movements. At 54 months age, lip area is driven primarily by vertical opening as this child produces the phrase “buy Bobby a puppy.”
Figure 2
Figure 2
Facial marker configuration and kinematic lip shape time series data. Figure 2a shows data from a participant at 3 months age and 2b shows data for the same child at 54 months. Note that at 3 months age, horizontal spread and vertical opening both drive lip area as this child makes prelinguistic spontaneous movements. At 54 months age, lip area is driven primarily by vertical opening as this child produces the phrase “buy Bobby a puppy.”
Figure 3
Figure 3
Lip shape verticality, horizontal spread, and expressive communication scaled scores (BDI) presented by age. Verticality is the correlation between vertical opening and lip area time series data, where horizontal spread is the correlation between horizontal opening and lip area. Error bars represent standard error of the mean across subjects.
Figure 4
Figure 4
Lip shape verticality for spontaneous and elicited productions presented across age levels. Mixed model analyses showed that age significantly predicted lip shape verticality for spontaneous and elicited productions.
See this image and copyright information in PMC

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