Second formant transitions in fluent speech of persistent and recovered preschool children who stutter

Subramanian, Anu; Yairi, Ehud; Amir, Ofer

doi:10.1016/s0021-9924(02)00135-1

Cited by 32 publications

(18 citation statements)

References 36 publications

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“…This type of articulatory examination has been lacking in typically developing children. Moreover, normative data would be valuable for diagnosis and development of treatment strategies of speech and/or language disorders [e.g., detection and treatment of early stuttering disorders that manifest as differences in formant transitions in CV syllables (e.g., Cheng et al, 2007;Subramanian et al, 2003)]. …”

Section: Le Measures In Infants and Childrenmentioning

confidence: 99%

The development of motor synergies in children: Ultrasound and acoustic measurements

Noiray

Ménard

Iskarous

2013

The Journal of the Acoustical Society of America

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The present study focuses on differences in lingual coarticulation between French children and adults. The specific question pursued is whether 4-5 year old children have already acquired a synergy observed in adults in which the tongue back helps the tip in the formation of alveolar consonants. Locus equations, estimated from acoustic and ultrasound imaging data were used to compare coarticulation degree between adults and children and further investigate differences in motor synergy between the front and back parts of the tongue. Results show similar slope and intercept patterns for adults and children in both the acoustic and articulatory domains, with an effect of place of articulation in both groups between alveolar and non-alveolar consonants. These results suggest that 4-5 year old children (1) have learned the motor synergy investigated and (2) have developed a pattern of coarticulatory resistance depending on a consonant place of articulation. Also, results show that acoustic locus equations can be used to gauge the presence of motor synergies in children.

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Section: Le Measures In Infants and Childrenmentioning

confidence: 99%

The development of motor synergies in children: Ultrasound and acoustic measurements

Noiray

Ménard

Iskarous

2013

The Journal of the Acoustical Society of America

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“…The older Japanese speakers were consistent with the adult data from Ujihira (2011) who found 77% voiceless CV and 23% voiced CV repetitions. Researchers have found less contrastive formant frequency transition rates and lower F2 formant frequencies in Englishspeaking preschoolers who stutter (Chang et al, 2002) and in those preschoolers who will persist in stuttering (Subramanian et al, 2003). Thus, one possibility is that voiceless C-V transitions do not attract stuttering in the form of syllable repetitions in early stages of stuttering, but begin to in later school-age years as utterance length and complexity and especially speech rate increase, consistent with the Covert Repair Hypothesis (Kolk and Postma, 1997).…”

Section: Discussionmentioning

confidence: 99%

Speech sample measures in Japanese children and adults who stutter

LaSalle

Huffman

2014

Speech, Language and Hearing

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“…For example, some studies have suggested increased or reduced coarticulation for speakers with dysarthria compared to healthy speakers although the difference is very subtle [3, 6, 7]. Other studies have suggested that children who stutter exhibit less refined CV (consonant-vowel) coarticulation (e.g., formant transition rate is not as contrastive as in typically fluent peers across 3 places of stop consonants) and that these patterns may serve as a predictive factor for persistence beyond childhood ([8, 9]; however, see Frisch et al [10] and Sussman et al [11]). However, vowel targets used in these studies have been largely restricted to nonneutral vowels and diphthongs.…”

Section: Introductionmentioning

confidence: 99%

A Kinematic Analysis of Coarticulation Effects on Schwa

Kim

Coalson

Berry

2018

Folia Phoniatr Logop

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Purpose: This study investigated coarticulatory effects on schwa. The purpose was to establish a viable phonetic environment and analysis for future studies of coarticulation, particularly in motor speech disorders. Method: Seven female adults read 2 phrases containing 4 target words in a CVC structure embedded in the carrier phrases, “Put a CVC here” and “Get CVC a puppy.” A 3D electromagnetic articulography system was used to track lingual movements during schwa production. Two indices of coarticulation were employed: (a) tongue position difference between the temporal midpoint (grand mean of each speaker) and the onset/offset of schwa immediately following or preceding a transconsonantal vowel and (b) tongue position differences between the grand mean of each speaker and each utterance repetition, both measured at the temporal midpoint of the schwa. Results: Both measures indicated that schwa is significantly influenced by transconsonantal corner vowels. The magnitude of coarticulation effects on schwa varied among the 4 corner vowels in the order of /i/>/ɑ/ = /æ/>/u/. Conclusion: Findings support the use of schwa in future studies when examining coarticulatory effects in people with and without motor speech disorders. Some methodological issues such as selection of measurement points and speech stimuli are also discussed.

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Second formant transitions in fluent speech of persistent and recovered preschool children who stutter

Cited by 32 publications

References 36 publications

The development of motor synergies in children: Ultrasound and acoustic measurements

The development of motor synergies in children: Ultrasound and acoustic measurements

Speech sample measures in Japanese children and adults who stutter

A Kinematic Analysis of Coarticulation Effects on Schwa

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