Interarticulator coordination in children with and without cerebral palsy

Nip, Ignatius S. B.

doi:10.3109/17518423.2015.1022809

Cited by 16 publications

(37 citation statements)

References 47 publications

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“…These findings also appear to parallel reports of reduced oromotor performance during speech production including descriptions of increased lip and jaw displacements [14] and reduced coordination [15]. These articulatory differences may account for the speech deficits commonly observed in this group, including a slower speaking rate [14] and reduced intelligibility [15].…”

Section: Discussionsupporting

confidence: 80%

“…Fifteen reflective markers were placed on each participant’s face as shown in Fig. 1 [12, 14, 15]. Three spherical reflective markers, approximately 2 mm in diameter, were placed on the jaw using double-sided adhesive hypoallergenic tape.…”

Section: Methodsmentioning

confidence: 99%

“…Recent research using kinematic methods to study oro-motor biomechanics of speech production in children with CP suggests difficulty with the timing and gradation of oral muscle activation [13], articulatory overshoot during speech [14], and reduced coordination [15]. Although chewing and speech are distinct tasks it is plausible that similar motoric deficits are present during chewing given the shared effectors across tasks.…”

Section: Introductionmentioning

confidence: 99%

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Spatial Characteristics of Jaw Movements During Chewing in Children with Cerebral Palsy: A Pilot Study

2017

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This study compared jaw motion between children with cerebral palsy (CP) and their typically-developing (TD) peers during chewing. The jaw movements of 11 children with spastic CP (GMFCS levels II–V) all of whom were exclusively oral feeders with no reported clinical issues with feeding [mean age = 7.49 (2.30) years; 7 males, 4 females] and 11 age- and sex-matched TD peers [mean age = 7.54 (2.35) years] were recorded using optical motion capture. Participants chewed five trials of three different consistencies, including puree, mechanical soft, and solid. For each chewing sequence, the path distance (total amount of distance traveled by the jaw), average jaw speed, and working space (total 3-dimensional size of the jaw movements during chewing) were calculated. The CP group had greater path distances for mechanical soft and solids (p < 0.001) and larger working spaces (p < 0.001) than the TD group. Consistency differences were also found with path distances increasing for both groups with increased bolus consistency (p < 0.001). Puree was chewed most slowly for both groups (p = 0.05) and was associated with smaller working space than the other consistencies for both groups (p < 0.001). The TD group demonstrated slower speeds for mechanical soft as compared to solids (p = 0.05), a finding which was not observed in the CP group. The results suggest children with CP showed jaw movement differences during chewing despite being exclusive oral eaters with no reports of clinical feeding or deglutition disorders. Food consistency also influenced jaw movements in both children with CP and their TD peers.

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Section: Discussionsupporting

confidence: 80%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Spatial Characteristics of Jaw Movements During Chewing in Children with Cerebral Palsy: A Pilot Study

2017

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“…Such formant instability within vocalic segments containing corner vowels could affect vowel space area measurements for children with SMI, as the vowel midpoints may not reflect the ultimate endpoint of the formant trajectory for that phoneme. This hypothesis is also supported by kinematic research, which has demonstrated that children with CP have decreased spatial and temporal coupling between articulators (Nip, 2017) and use larger lip and jaw excursions than TD children in some contexts (Nip, 2013). Alternatively, it is also possible that individual differences among children in the SMI group may have masked group differences in F2 IQR between children with SMI and TD children.…”

Section: F2 Iqrmentioning

confidence: 85%

“…Lee, Hustad, & Weismer, 2014;Weismer, Jeng, Laures, Kent, & Kent, 2001). For children with cerebral palsy (CP), articulatory imprecision is a common perceptual feature of dysarthria (Hustad, Gorton, & Lee, 2010;Nip, 2013Nip, , 2017Workinger & Kent, 1991). Prior research has identified acoustic correlates of reduced intelligibility in children with CP (Higgins & Hodge, 2002;Hsu, Chen, & Cheng, 2013;Hustad et al, 2010;J.…”

Section: Range and Precision Of Formant Movement In Pediatric Dysarthriamentioning

confidence: 99%

Range and Precision of Formant Movement in Pediatric Dysarthria

Allison

Annear

Policicchio

et al. 2017

J Speech Lang Hear Res

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Purpose: This study aimed to improve understanding of speech characteristics associated with dysarthria in children with cerebral palsy by analyzing segmental and global formant measures in single-word and sentence contexts. Method: Ten 5-year-old children with cerebral palsy and dysarthria and 10 age-matched, typically developing children participated in this study. Vowel space area and second formant interquartile range were measured from children's elicited productions of single words and sentences. Results: Results showed that the children with dysarthria had significantly smaller vowel space areas than typically developing children in both word and sentence contexts; however, overall ranges of second formant movement did not differ between groups in word or sentence contexts. Additional analysis of single words revealed that, compared to typical children, children with dysarthria had smaller second formant interquartile ranges in single words with phonetic contexts requiring large changes in vocal tract configuration, but not in single words with monophthongs. Conclusions: Results of this study suggest that children with dysarthria may not have globally reduced ranges of articulatory movement compared to typically developing peers; however, they do exhibit reduced precision in producing phonetic targets.

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A first investigation of tongue, lip, and jaw movements in persons with dysarthria due to multiple sclerosis

Mefferd¹,

Lai²,

Bagnato

2019

Multiple Sclerosis and Related Disorders

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Background: Multiple sclerosis can affect the speech motor system and result in dysarthria. Objectives: This pilot study sought to identify tongue, lip, and jaw motor deficits in persons with dysarthria due to multiple sclerosis (PwDMS) to better understand the speech motor mechanisms that underlie their aberrant speech. Methods: Tongue and jaw movements during /ai/ and lower lip and jaw movements during /bob/ were examined in eleven PwDMS and fourteen age- and sex-matched controls using threedimensional electromagnetic articulography. Movement duration, maximum displacement, peak speed, stiffness (i.e., peak speed/displacement ratio), and jaw contribution to lower lip and tongue displacements were of particular interest. Results: Whereas most kinematic measures yielded significant between-group differences for tongue and jaw motor performance during /ai/, lower lip and jaw motor performance during /bob/ were mostly comparable between groups. Conclusion: Findings suggest that speech movements of the tongue are differentially more impaired than those of the lower lip in PwDMS. Particularly the ability to move the tongue with adequate speed during speech was significantly impaired in PwDMS, which may explain, in part, their slowed speech rate. Aberrant jaw kinematics during /ai/ may be a compensatory strategy to maximize speech clarity in the presence of the impaired tongue motor performance.

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Interarticulator coordination in children with and without cerebral palsy

Cited by 16 publications

References 47 publications

Spatial Characteristics of Jaw Movements During Chewing in Children with Cerebral Palsy: A Pilot Study

Spatial Characteristics of Jaw Movements During Chewing in Children with Cerebral Palsy: A Pilot Study

Range and Precision of Formant Movement in Pediatric Dysarthria

A first investigation of tongue, lip, and jaw movements in persons with dysarthria due to multiple sclerosis

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