Speech-associated labiomandibular movement in Mandarin-speaking children with quadriplegic cerebral palsy: A kinematic study

Hong, Wei-Hsien; Chen, Hsieh-Ching; Yang, Frank; Wu, Ching‐yi; Chen, Chia-Ling; Wong, May‐Kuen

doi:10.1016/j.ridd.2011.06.016

Cited by 12 publications

(27 citation statements)

References 22 publications

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“…More strikingly, children with CP had reduced temporal coupling, as represented by higher lags, than their TD peers for all three articulator pairs. This reduction in temporal coupling is similar to previous findings [15]. Because the CP group included speakers with no dysarthria, the lack oromotor involvement in these children may have diminished the group differences.…”

Section: Discussionsupporting

confidence: 90%

“…Speakers with CP demonstrate increased segmental durations for consonants and vowels [14]. In addition, speakers with CP consistently produce greater lip and jaw displacements during oral movements than their typically-developing peers during the production of syllables [11, 15], words [16, 17], diadochokinetic tasks [11] and sentences [11]. This increase in oral displacement suggests that children with CP may have a reduced ability to grade force control, creating more ballistic movements during speech and slowed speaking rates [11].…”

Section: Speech Impairments In Children With Cpmentioning

confidence: 99%

“…In typical development, spatial and temporal coupling among the lips and jaw increase between the ages of 1 to 6 years, with further refinement into adulthood, and these couplings are proposed as the reason for the poor intelligibility observed at very young ages [31]. Reduced temporal coordination between the lower lip and jaw has been reported in children with CP [15]. Therefore, interarticulator coordination may be one underlying reason for reduced intelligibility in (a) children with dysarthria secondary to CP and (b) during the production of utterances that have increased articulatory and linguistic demands in children with CP but no dysarthria [8].…”

Section: Interarticulator Coordinationmentioning

confidence: 99%

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Interarticulator coordination in children with and without cerebral palsy

Nip

2015

Developmental Neurorehabilitation

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The current study investigates how interarticulator coordination changes across speaking tasks varying in articulatory and linguistic demands for children with CP and their typically-developing peers. Articulatory movements from 12 children with spastic CP (7M, 5F, 4–15 years of age) and 12 typically-developing age- and sex-matched peers were cross-correlated to determine the degree of spatial and temporal coupling between the upper lip and jaw, lower lip and jaw, and upper and lower lips. Spatial and temporal coupling were also correlated with intelligibility. Results indicated that children with CP have reduced spatial coupling between the upper and lower lips and reduced temporal coupling between all articulators as compared to their typically-developing peers. For all participants, sentences were produced with the greatest degree of interarticulator coordination when compared to the diadochokinetic and syllable repetition tasks. Measures of interarticulator coordination were correlated with intelligibility for the speakers with CP.

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Section: Discussionsupporting

confidence: 90%

Section: Speech Impairments In Children With Cpmentioning

confidence: 99%

Section: Interarticulator Coordinationmentioning

confidence: 99%

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Interarticulator coordination in children with and without cerebral palsy

Nip

2015

Developmental Neurorehabilitation

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“…To test tongue-jaw coordination in this study, we used a crosscorrelation analysis of tongue-tip and jaw movements during the consonantal release. Spatial and temporal coupling of tongue-tip and jaw were quantified by the peak coefficient (TJpeak) and the associated time lag (TJlag) of the cross-correlation between tongue-tip and jaw pairs (Green, Moore, & Reilly, 2002;Hong et al, 2011). The peak coefficient (TJpeak) is an index of the relative similarity of the decoupled tongue-tip and jaw signals and the time lag (TJlag) is an index of the synchrony of the two signals (Hong et al, 2011).…”

Section: Tongue-jaw Decouplingmentioning

confidence: 99%

Relationship between kinematics, F2 slope and speech intelligibility in dysarthria due to cerebral palsy

Rong

Loucks

Kim

et al. 2012

Clinical Linguistics & Phonetics

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A multimodal approach combining acoustics, intelligibility ratings, articulography and surface electromyography was used to examine the characteristics of dysarthria due to cerebral palsy (CP). CV syllables were studied by obtaining the slope of F2 transition during the diphthong, tongue-jaw kinematics during the release of the onset consonant, and the related submental muscle activities and relating these measures to speech intelligibility. The results show that larger reductions of F2 slope are correlated with lower intelligibility in CP-related dysarthria. Among the three speakers with CP, the speaker with the lowest F2 slope and intelligibility showed smallest tongue release movement and largest jaw opening movement. The other two speakers with CP were comparable in the amplitude and velocity of tongue movements, but one speaker had abnormally prolonged jaw movement. The tongue-jaw coordination pattern found in the speakers with CP could be either compensatory or subject to an incompletely developed oromotor control system.

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“…Hence, speech motor control is important for articulation development [10]. Children with severe (spastic quadriplegia) and mild CP (spastic diplegia) showed high oro-motor variability and required more effort to coordinate labiomandibular movement during speech production [9,27]. Even for children with mild CP (spastic diplegia), a high oro-motor variability of the durations of utterances reflects deficits in spatial and/or especially temporal control during speech production [9].…”

Section: Discussionmentioning

confidence: 99%

Motor Deficit Severity Mediates Effects of Intellectual Function in Predicting Speech Motor Control in Children with Cerebral Palsy

Wu¹,

Chuang²,

Chung³

et al. 2018

Int J Phys Med Rehabil

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Objective: To elucidate whether motor deficit severity mediates effects of intellectual function in predicting motor speech functions in children with cerebral palsy (CP).Method: Twenty-five children with spastic CP aged 5-8 were classified into two groups, levels I-II (n=13) and levels III-IV (n=12) based on Gross Motor Function Classification System (GMFCS) levels. Predictor was the intelligence quotient (IQ). Speech outcome measures were Percentage of Consonants Correct (PCC) and Verbal Motor Production Assessment for Children (VMPAC). Pearson correlation analysis was used to investigate relationships between IQ and speech outcomes. A mediation analysis (a three-variable path model) was used to explain how GMFCS levels (the mediator) affect IQ to predict speech outcome.Results: Children with GMFCS levels I-II had greater scores in all IQ and all VMPAC sub scores, and PCC than those with GMFCS levels III-IV (p<0.05). Pearson correlation analysis showed that full IQ (FIQ) was correlated with all VMPAC scores (r=0.42-0.62, p<0.05), but not with PCC scores. The path model assumes path a from the predictor variable (FIQ) to the mediator (GMFCS levels), path b from the impact of the mediator (GMFCS levels) on the outcome variable (VMPAC), and two causal paths to the outcome variable (paths c and c'). Mediation analysis revealed that GMFCS level completely mediated the effect of FIQ when predicting global motor control (a=-0.027 ± 0.01, p=0.01; b=-17.910 ± 3.620, p<0.001; c=0.537 ± 0.235, p=0.032; c'=0.058 ± 0.192, p=0.766), focal motor control (a=-0.027 ± 0.01, p=0.01; b=-9.287 ± 2.441, p=0.001; c=0.315 ± 0.140, p=0.035; c'=0.067 ± 0.129, p=0.611), and average VMPAC (a=-0.027 ± 0.01, p=0.01; b=-10.976 ± 2.521, p<0.001; c=0.455 ± 0.154, p=0.007; c'=0.161 ± 0.133, p=0.241). GMFCS level partially mediated the effect of FIQ when predicting the VMPAC sequence (a=-0.027 ± 0.01, p=0.01; b=-5.732 ± 2.767, p=0.050; c=0.512 ± 0.135, p=0.001; c'=0.359 ± 0.146, p=0.023). Conclusion:Motor deficit severity mediates effect of intellectual functions on speech motor control. The findings allow clinicians to identify early motor speech problems in children with CP using the GMFCS level alone.

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Speech-associated labiomandibular movement in Mandarin-speaking children with quadriplegic cerebral palsy: A kinematic study

Cited by 12 publications

References 22 publications

Interarticulator coordination in children with and without cerebral palsy

Interarticulator coordination in children with and without cerebral palsy

Relationship between kinematics, F2 slope and speech intelligibility in dysarthria due to cerebral palsy

Motor Deficit Severity Mediates Effects of Intellectual Function in Predicting Speech Motor Control in Children with Cerebral Palsy

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