Download or read book Auditory motor Integration Influences on Speech Motor Control and Fluency a Comparison of Normally Fluent Speakers and People who Stutter written by Hee-Cheong Chon and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall purpose of this dissertation was to identify the effects of delayed auditory feedback (DAF) on speech motor stability and speech fluency in normally fluent adults (PWNS) and to compare them with effects on adults who exhibit persistent stuttering. If the auditory processing influences differently the two groups, it might shed light on the basic role of auditory-to-motor integration in speech production. Differences in auditory feedback dependency were also expected between normally fluent individuals who are highly susceptible to DAF and normally fluent individuals who are minimally affected by DAF. Three studies were conducted to (I) subgroup 62 normally fluent males and females based on their responses to DAF during spontaneous conversational speaking and reading tasks, (II) compare responses to DAF between 15 normally fluent adults who showed high stuttering-like disfluencies (SLD) under DAF (High-SLD group), 15 normally fluent adults who showed low SLD under DAF (Low-SLD group), and 15 adults who stutter, and (III) compare the specific effects of DAF on speech motor stability and movement patterns (lower-lip movement) in 11 normally fluent adults versus 11 adults who stutter. Study I revealed that normally fluent participants, as a group, increased the amount of SLD and speech errors (SE), and decreased articulation rate (AR) when speaking under DAF relative to speaking under amplified non-delayed condition (aNAF). Sex had a limited differential effect on other disfluencies (OD) and AR whereas task effects were seen in OD, SE, and AR. Neither sex nor task, however, did influence SLD. Three subgroups, Low, Middle, and High Responders were identified. There were clear differences between the Low and High Responders in that the Low Responders exhibited smaller numbers of SLD and SE as well as faster AR than the High Responders. The Middle Responders revealed task dependency, showing different responses than those exhibited by the Low and High Responders. The results of Study II showed that people who stutter did not reduce SLD counts under DAF condition, a finding that deviates from reports of previous studies. PWS also exhibited higher mean number of SLD than the normally fluent Low-SLD group but similar to that of normally fluent High-SLD group. For all groups, the number of SE was higher and AR was slower under DAF than aNAF. PWS showed larger individual variability in responses to aNAF compared to natural feedback conditions in that some PWS reduced SLD under aNAF condition. Study III revealed significant difference between PWS and PWNS in speech kinematic stabilities, showing that PWS exhibited higher spatio-temporal index (i.e., lower speech motor stability) than PWNS across auditory feedback conditions in four utterance stimuli. PWS, however, yielded higher speech movement stability under aNAF and 25ms-DAF in longer stimuli compared to natural feedback condition. There was no group difference in movement displacement and velocity for opening-closing sequential movements but the patterns were different in each group. PWNS showed lower displacement and velocity under aNAF and DAF compared to natural feedback condition for both opening and closing movements whereas PWS showed higher displacement under DAF than aNAF condition and higher velocity under nNAF than 25ms-DAF. Normally fluent people showed shorter movement duration and faster articulation rate than PWS across auditory feedback and stimuli. This dissertation study has demonstrated different influences of auditory feedback on speech motor control in normally fluent adults and adults who stutter. In both groups, individual variability was obvious. In normally fluent adults, diverse responses to DAF could be explained with different auditory feedback dependency for ongoing speech articulatory production. PWS were more dependent on auditory feedback for speech production, and auditory-to-motor integration under aNAF and short delay feedback conditions helped them to improve speech motor stability.
Download or read book KiddyCat written by Martine Vanryckeghem and published by Plural Publishing. This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The KiddyCAT is a companion test to the Behavior Assessment Battery designed for use with children under the age of six. It enables effective assessment of the speech-associated attitude of preschool and kindergarten children. The instructions and the test items are specifically formulated at the linguistic level of this age group.
Download or read book Auditory Modulation During Speech Planning in Stuttering and Nonstuttering Individuals written by Ayoub Daliri and published by . This book was released on 2015 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stuttering is associated with atypical structural and functional connectivity among sensorimotor brain areas. However, it remains entirely unknown which specific mechanisms of sensorimotor control are affected by these neurological differences. In the program of research described here, I used a novel experimental paradigm and electroencephalographic (EEG) recordings to study motor-to-sensory interactions during speech movement planning in stuttering versus nonstuttering speakers. Experiment 1 investigated whether stuttering adults are deficient in modulating the auditory system prior to speech initiation. Auditory modulation was examined by recording auditory evoked potentials in response to probe tones presented during movement planning in a delayed-response speaking condition as compared with no-speaking control conditions. Findings indicated that stuttering speakers did not show the modulation of auditory processing (reflected in reduced amplitude of the N1 component) that was observed in nonstuttering speakers. This finding raised the question whether stuttering individuals have problems specifically with generating or evaluating a planning-related efference copy signal that can be used to predict upcoming self-generated sensory inputs or, more generally, with using any available information to make sensory predictions. In Experiment 2, probe tones were therefore delivered while participants anticipated either self-producing speech or hearing their own pre-recorded speech played back and in a control condition without auditory input. Results showed that auditory modulation differed between stuttering and normally fluent adults in both conditions with predictable auditory input. Experiment 3 was designed to start exploring the functional significance of pre-speech auditory modulation in general, and the functional implications of stuttering speakers' lack of modulation. Participants in this experiment completed a sensorimotor adaptation task with formant-shifted auditory feedback, and the results served to estimate each speaker's reliance on auditory feedback. In a separate session, pre-speech auditory modulation was again assessed by means of probe tones, but this time N1 modulation relative to a no-speaking control condition was quantified both in a condition that allowed typical reliance on auditory feedback (non-delayed auditory feedback; NAF) and in a condition that did not allow reliance on auditory feedback (delayed auditory feedback; DAF). Results revealed that (a) stuttering speakers showed only limited adaptation to formant-shifted auditory feedback; (b) for nonstuttering speakers, DAF caused the amount of pre-speech auditory modulation to be reduced whereas for stuttering speakers, DAF enhanced pre-speech auditory modulation; and (c) across the two groups, there was a relationship between the effect of DAF on pre-speech auditory modulation and reliance on auditory feedback during the adaptation task. These studies demonstrate that stuttering individuals have difficulties with using auditory predictions--both those related to active movement planning and those related to input that is not a consequence of one's own actions--to prime this sensory system with critical importance for speech production. Moreover, stuttering individuals showed not only a lack of modulation of the auditory system under normal speaking conditions (NAF) but also a lower reliance on auditory feedback as revealed here during a sensorimotor adaptation task with formant-shifted auditory feedback. Overall, findings suggest that stuttering is associated with deficits in auditory-motor integration, and that the auditory system may be not appropriately modulated for its role in online feedback control during speech production. I speculate that the inability to use predictive information for appropriately priming task-relevant sensory systems for their role in monitoring articulatory movements may lead to unnecessary and disruptive attempts at correcting ongoing movements. These maladaptive "repairs" may contribute to the fluency breakdowns that form the primary symptoms of stuttering.
Download or read book A Handbook on Stuttering Seventh Edition written by Oliver Bloodstein and published by Plural Publishing. This book was released on 2021-06-25 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: The revised edition of A Handbook on Stuttering continues its remarkable role as the authoritative, first-line resource for researchers and clinicians who work in the field of fluency and stuttering. Now in its seventh edition, this unique book goes beyond merely updating the text to include coverage of roughly 1,000 articles related to stuttering research and practice that have been published since 2008. This extended coverage integrates the more traditional body of research with evolving views of stuttering as a multi-factorial, dynamic disorder. Comprehensive, clear, and accurate, this text provides evidence-based, practical information critical to understanding stuttering. By thoroughly examining the intricacies of the disorder, A Handbook on Stuttering, Seventh Edition lays the foundation needed before considering assessment and treatment. New to the Seventh Edition: * A completely reorganized table of contents, including two new chapters. * The deletion of approximately 1,000 non-peer-reviewed references from the previous edition to assure discussion of the highest quality evidence on stuttering. * New content on the development of stuttering across the lifespan and assessment. * Given the Handbook’s historic role as a primary reference for allied professionals, a new chapter that addresses myths and misconceptions about stuttering * Expanded coverage on the role of temperament in childhood stuttering * Expanded coverage of brain-based research, genetics, and treatment findings. * A thoroughly updated chapter on conditions under which stuttering fluctuates * Brief tutorial overviews of critical concepts in genetics, neuroimaging, language analysis and other relevant constructs, to better enable reader appreciation of research findings. * A greater selection of conceptual illustrations of basic concepts and findings than in prior editions * Integrated cross-referencing to content across chapters
Download or read book The Neurophysiology of Developmental Stuttering Unraveling the Mysteries of Fluency written by Pierpaolo Busan and published by Frontiers Media SA. This book was released on 2022-02-24 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Speech Motor Dynamics in Stuttering written by Hermann F.M. Peters and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present book arose from a conference on Speech Motor Dynamics in Stuttering held at the University of Nijmegen in Nijmegen, the Netherlands from June 13-15, 1985. The conference was organized on the occasion of the 25th anniversary of the Department of Speech Pathology of the University Hospital. The topic selected for the conference and now developed within this book, Speech Motor Dynamics in Stuttering, was judged to be particularly timely and especially relevant to an emerging body of work on stuttering. For over ten years there had been no confer ences that brought together researchers who have worked on stuttering from perspectives stressing the dynamics of motor processes. Yet during that time major changes have occurred in research on stuttering which signify a growing level of scientific maturity within the problem area. This book attempts to character ize a number of major trends in research on speech motor processes in stuttering. There has been a lessening in the postulation of causes of stuttering in the form of global hypothesis which have tenuous ties to empi rical data. New ideas about speech motor processes in stuttering have been stimulated by researchers who have done productive work on more general issues of motor control. This book therefore directs our attention to a number of models of speech production which are relevant to stuttering.
Download or read book Online Control of Articulation Based on Auditory Feedback in Normal Speech and Stuttering written by Shanqing Cai and published by . This book was released on 2012 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: Articulation of multisyllabic speech requires a high degree of accuracy in controlling the spatial (positional) and the temporal parameters of articulatory movements. In stuttering, a disorder of speech fluency, failures to meet these control requirements occur frequently, leading to dysfluencies such as sound repetitions and prolongations. Currently, little is known about the sensorimotor mechanisms underlying the control of multisyllabic articulation and how they break down in stuttering. This dissertation is focused on the interaction between multisyllabic articulation and auditory feedback (AF), the perception of one's own speech sounds during speech production, which has been shown previously to play important roles in quasi-static articulations as well as in the mechanisms of stuttering. To investigate this topic empirically, we developed a digital signal processing platform for introducing flexible online perturbations of time-varying formants in speakers' AF during speech production. This platform was in a series of perturbation experiments, in which we aimed separately at elucidating the role of AF in controlling the spatial and temporal parameters of multisyllabic articulation. Under these perturbations of AF, normal subjects showed small but significant and specific online adjustments in the spatial and temporal parameters of articulation, which provided first evidence for a role of AF in the online fine-tuning of articulatory trajectories. To model and explain these findings, we designed and tested sqDIVA, a computational model for the sensory feedback-based control of speech movement timing. Test results indicated that this new model accurately accounted for the spatiotemporal compensation patterns observed in the perturbation experiments. In addition, we investigated empirically how the AF-based online speech motor control differed between people who stutter (PWS) and normal speakers. The PWS group showed compensatory responses significantly smaller in magnitude and slower in onset compared to the control subjects' responses. This under-compensation to AF perturbation was observed for both quasi-static vowels and multisyllabic speech, and for both the spatial and temporal control of articulation. This abnormal sensorimotor performance supports the hypothesis that stuttering involves deficits in the rapid internal transformations between the auditory and motor domains, with important implications for the neural basis of this disorder.
Download or read book Stuttering and Cluttering Second Edition written by David Ward and published by Psychology Press. This book was released on 2017-08-15 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stuttering and Cluttering provides a clear, accessible and wide-ranging overview of both the theoretical and clinical aspects of two disorders of fluency: stuttering and cluttering. This edition remains loyal to the idea that stuttering and cluttering can best be understood by first considering various overarching frameworks which can then be expanded upon, and provides a clear position from which to disentangle the often complex interrelationships of these frameworks. The book is divided into two parts, the first of which mainly deals with theory and aetiology, while the second focuses on clinical aspects of assessment, diagnosis and treatment. The book also provides frequent references across Parts I and II to help link the various areas of investigation together. This revised edition of Stuttering and Cluttering reflects the major changes in thinking regarding both theory and therapy that have taken place since the publication of the first edition. As well as those who stutter and clutter, the book will be invaluable for speech language therapy/speech language pathology students, practicing clinicians, psychologists and linguists around the world.
Download or read book Stuttering written by Barry Guitar and published by Lippincott Williams & Wilkins. This book was released on 2006 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new Third Edition provides a comprehensive overview of the etiology and development of stuttering and details appropriate approaches to accurate assessment and treatment. A new chapter on related fluency disorders discusses evaluation and treatment of stuttering associated with neurological disease or trauma, psychological disturbance, or mental retardation, and explains how developmental stuttering can be differentiated from these conditions. This edition also features a new chapter on preliminaries to assessment as well as new information on differential diagnosis of stuttering versus other fluency disorders. Appendices include forms for diagnosis and evaluation.
Download or read book The Journal of the Acoustical Society of America written by Acoustical Society of America and published by . This book was released on 2002 with total page 1528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Speech Motor Control written by Ben Maassen and published by Oxford University Press. This book was released on 2010-02-25 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest theoretical developments in the area of speech motor control, offering new insights by leading scientists and clinicians into speech disorders. The scope of this book is broad, presenting research in the areas of modelling, genetics, brain imaging, behavioral experimentation, and clinical applications.
Download or read book The Nature of Stuttering written by Charles Van Riper and published by . This book was released on 1992 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Speech Motor Control written by Ben Maassen and published by Oxford University Press. This book was released on 2007-08-16 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: Speaking is one of the most complex skills that humans perform. This volume presents state of the art research in the science of speech motor control and speech disorders. This will be an important volume for all those involved in speech research and speech pathology, including those from the disciplines of psychology, neurology, and ENT.
Download or read book The Cognitive and Neural Organisation of Speech Processing written by Patti Adank and published by Frontiers Media SA. This book was released on 2016-03-18 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Speech production and perception are two of the most complex actions humans perform. The processing of speech is studied across various fields and using a wide variety of research approaches. These fields include, but are not limited to, (socio)linguistics, phonetics, cognitive psychology, neurophysiology, and cognitive neuroscience. Research approaches range from behavioural studies to neuroimaging techniques such as Magnetoencephalography, electroencephalography (MEG/EEG) and functional Magnetic Resonance Imaging (fMRI), as well as neurophysiological approaches, such as the recording of Motor Evoked Potentials (MEPs), and Transcranial Magnetic Stimulation (TMS). Each of these approaches provides valuable information about specific aspects of speech processing. Behavioural testing can inform about the nature of the cognitive processes involved in speech processing, neuroimaging methods show where (fMRI and MEG) in the brain these processes take place and/or elucidate on the time-course of activation of these brain areas (EEG and MEG), while neurophysiological methods (MEPs and TMS) can assess critical involvement of brain regions in the cognitive process. Yet, what is currently unclear is how speech researchers can combine methods such that a convergent approach adds to theory/model formulation, above and beyond the contribution of individual component methods? We expect that such combinations of approaches will significantly forward theoretical development in the field. The present research topic comprise a collection of manuscripts discussing the cognitive and neural organisation of speech processing, including speech production and perception at the level of individual speech sounds, syllables, words, and sentences. Our goal was to use findings from a variety of disciplines, perspectives, and approaches to gain a more complete picture of the organisation of speech processing. The contributions are grouped around the following five main themes: 1) Spoken language comprehension under difficult listening conditions; 2) Sub-lexical processing; 3) Sensorimotor processing of speech; 4) Speech production. The contributions used a variety of research approaches, including behavioural experiments, fMRI, EEG, MEG, and TMS. Twelve of the 14 contributions were on speech perception processing, and the remaining two examined speech production. This Research Topic thus displays a wide variety of topics and research methods and this comprehensive approach allows an integrative understanding of currently available evidence as well as the identification of concrete venues for future research.
Download or read book A Handbook on Stuttering written by Oliver Bloodstein and published by Delmar Thomson Learning. This book was released on 2008 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the classic textbook on stuttering now completely updated for its sixth edition. Comprehensive, clear, and accurate, this text is packed with research, theories, and practical information critical to understanding stuttering. It provides a detailed picture of how the person who stutters is different from fluent speakers. This text thoroughly examines the reasons individuals stutter and the intricacies of the disorder, laying the foundation of understanding needed before assessment and treatment can be effectively considered.
Download or read book New perspectives on the role of sensory feedback in speech production written by John Houde and published by Frontiers Media SA. This book was released on 2023-06-05 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fluency Disorders written by Kenneth J. Logan and published by Plural Publishing. This book was released on 2020-10-22 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluency Disorders: Stuttering, Cluttering, and Related Fluency Problems, Second Edition is a vital resource for graduate courses on stuttering and related disorders of fluency. This thoroughly updated text features accessible and comprehensive coverage of fluency disorders across a range of clinical populations, including those with developmental and acquired stuttering, cluttering, and various types of developmental and acquired language impairment. Information in the text is aligned with current standards for clinical certification specified by the American Speech-Language-Hearing Association's Council for Clinical Certification (CFCC). Readers will learn practical strategies and methods for how to assess and treat fluency disorders in preschool and school-aged children, teens, and adults. The text is organized into five key sections: Foundational Concepts, Neurodevelopmental Stuttering, Other Types of Fluency Disorders, Clinical Assessment, and Intervention Approaches. Together, these topics make the comprehensive Fluency Disorders a truly distinguishable text in the field of speech-language pathology. Key Features: * Content that emphasizes clinical practice as well as client/patient experiences * Discussion of fluency disorders in the context of communicative functioning and quality of life * Chapter objectives begin each chapter and highlight key topics * "Questions to Consider" conclude each chapter to help readers apply their knowledge * Readers learn to organize information around clinical principles and frameworks New to the Second Edition: * New larger 8.5" x 11" trim size * Updated and expanded references throughout * Reorganized outline and increased coverage of treatment and counseling information * Expanded use of text boxes to help readers relate chapter concepts to clinical practice Disclaimer: Please note that ancillary content (such as documents, audio, and video, etc.) may not be included as published in the original print version of this book.
