Neural Indices of Semantic Processing in Early Childhood Distinguish Eventual Stuttering Persistence and Recovery

Kreidler, Kathryn; Wray, Amanda Hampton; Usler, Evan; Weber, Christine

doi:10.1044/2017_jslhr-s-17-0081

Cited by 25 publications

(13 citation statements)

References 90 publications

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“…For both TD and SSD groups, the N400 effect for violations in lexical expectations was distributed over anterior and posterior ROIs. This broad distribution of the N400 is consistent with previous investigations of language processing in young children with TD (e.g., Atchley et al, 2006;Byrne et al, 1999) and children with stuttering and SLI (e.g., Kreidler et al, 2017;Pijnacker et al, 2017). As children age, the distribution of the N400 becomes more focal, and this topographic change is thought to reflect more efficient, adultlike processing of semantic information (Atchley et al, 2006;Byrne et al, 1999;Holcomb et al, 1992).…”

Section: Lexical Processingsupporting

confidence: 89%

Event-Related Potentials Elicited by Phonetic Errors Differentiate Children With Speech Sound Disorder and Typically Developing Peers

Gerwin

Brosseau-Lapré

Weber

2021

J Speech Lang Hear Res

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Purpose A growing body of research suggests that a deficit in speech perception abilities contributes to the development of speech sound disorder (SSD). However, little work has been done to characterize the neurophysiological processes indexing speech perception deficits in this population. The primary aim of this study was to compare the neural activity underlying speech perception in young children with SSD and with typical development (TD). Method Twenty-eight children ages 4;1–6;0 (years;months) participated in this study. Event-related potentials (ERPs) were recorded while children completed a speech perception task that included phonetic (speech sound) and lexical (meaning) matches and mismatches. Groups were compared on their judgment accuracy for matches and mismatches as well as the mean amplitude of the phonological mapping negativity (PMN) and N400 ERP components. Results Children with SSD demonstrated lower judgment accuracy across the phonetic and lexical conditions compared to peers with TD. The ERPs elicited by lexical matches and mismatches did not distinguish the groups. However, in the phonetic condition, the SSD group exhibited a more consistent left-lateralized PMN effect and a delayed N400 effect over frontal sites compared to the TD group. Conclusions These findings provide some of the first evidence of a delay in the neurophysiological processing of phonological information for young children with SSD compared to their peers with TD. This delay was not present for the processing of lexical information, indicating a unique difference between children with SSD and with TD related to speech perception of phonetic errors. Supplemental Material https://doi.org/10.23641/asha.16915579

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Section: Lexical Processingsupporting

confidence: 89%

Event-Related Potentials Elicited by Phonetic Errors Differentiate Children With Speech Sound Disorder and Typically Developing Peers

Gerwin

Brosseau-Lapré

Weber

2021

J Speech Lang Hear Res

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“…Many theorists have concluded that experimental and clinical evidence related to the onset and development of stuttering in childhood points to the central roles played by speech motor, language, and emotional factors (Walden et al, 2012; Ambrose et al, 2015; Smith and Weber, 2017). Experimental evidence supports the critical roles of speech sensorimotor systems and the mediating effects of language processes in early childhood stuttering (Silverman and Ratner, 2002; Anderson et al, 2005; MacPherson and Smith, 2013; Weber-Fox et al, 2013; Spencer and Weber-Fox, 2014; Walsh et al, 2015; Kreidler et al, 2017; Usler et al, 2017). Our understanding of how emotional factors may affect speech production in stuttering, especially in early childhood, is far more limited.…”

Section: Introductionmentioning

confidence: 79%

Sympathetic Nervous System Activity in Preschoolers Who Stutter

Walsh

Smith

Christ

et al. 2019

Front. Hum. Neurosci.

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BackgroundIn our Dynamic Pathways, account, we hypothesized that childhood stuttering reflects an impairment in speech sensorimotor control that is conditioned by cognitive, linguistic, and emotional factors. The purpose of this study was to investigate potential differences in levels of sympathetic arousal during performance of speech and non-speech tasks between children who do and do not stutter.MethodsSeventy-two preschool-aged children participated in the study, 47 children who stutter (CWS; 38 boys) and 25 children who do not stutter (CWNS; 18 boys). We recorded skin conductance and blood pulse volume (BPV) signals, indices of sympathetic arousal, during higher/lower load speech tasks (structured sentence production and picture description) and non-speech tasks (jaw wagging and forceful blowing). We included a measure that reflects children’s attitudes about their communication skills and a parent-report assessment of temperament.ResultsWe found no significant differences between preschool CWS and CWNS in phasic skin conductance response amplitude or frequency, BPV, and pulse rate for any of the experimental tasks. However, compared to CWNS, CWS had, on average, significantly higher skin conductance levels (SCL), indexing slowly changing tonic sympathetic activity, across both speech and non-speech experimental conditions. We found distinctive task-related profiles of sympathetic arousal in both groups of preschool children. Most children produced the highest levels of sympathetic arousal in the physically demanding blowing task rather than in speech, as seen in previous studies of adults. We did not find differences in temperament between the two groups of preschool children nor a relationship among behavioral indices of temperament and communication attitude and physiological measures of sympathetic arousal.ConclusionWe did not find that atypically high, speech-related sympathetic arousal is a significant factor in early childhood stuttering. Rather, CWS had higher, on average, task-related tonic SCLs across speech and non-speech tasks. A relationship among behavioral measures of temperament and physiological measures of sympathetic arousal was not confirmed. Key questions for future experiments are how the typical coupling of sympathetic and speech sensorimotor systems develops over childhood and adolescence and whether task related developmental profiles follow a different course in children who continue to stutter.

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“…Kreidler and colleagues 8 used ERPs as an index of semantic processing in 5-year-old CWS-eP, CWS-eR, and CWNS while they listened to sentences presented in a story con-text. Most of the CWS-eR exhibited a more mature pattern of ERP responses, similar to those seen in adult listeners, compared with CWS-eP.…”

Section: Experimental Level: Neurobiological Clues Into the Processesmentioning

confidence: 99%

What Are Predictors for Persistence in Childhood Stuttering?

et al. 2018

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Over the past 10 years, we (the Purdue Stuttering Project) have implemented longitudinal studies to examine factors related to persistence and recovery in early childhood stuttering. Stuttering develops essentially as an impairment in speech sensorimotor processes that is strongly influenced by dynamic interactions among motor, language, and emotional domains. Our work has assessed physiological, behavioral, and clinical features of stuttering within the motor, linguistic, and emotional domains. We describe the results of studies in which measures collected when the child was 4 to 5 years old are related to eventual stuttering status. We provide supplemental evidence of the role of known predictive factors (e.g., sex and family history of persistent stuttering). In addition, we present new evidence that early delays in basic speech motor processes (especially in boys), poor performance on a nonword repetition test, stuttering severity at the age of 4 to 5 years, and delayed or atypical functioning in central nervous system language processing networks are predictive of persistent stuttering.

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Neural Indices of Semantic Processing in Early Childhood Distinguish Eventual Stuttering Persistence and Recovery

Cited by 25 publications

References 90 publications

Event-Related Potentials Elicited by Phonetic Errors Differentiate Children With Speech Sound Disorder and Typically Developing Peers

Event-Related Potentials Elicited by Phonetic Errors Differentiate Children With Speech Sound Disorder and Typically Developing Peers

Sympathetic Nervous System Activity in Preschoolers Who Stutter

What Are Predictors for Persistence in Childhood Stuttering?

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