Written in a straightforward style reflecting the authors' extensive teaching and clinical experience in the field, this clinical reference book was developed for practitioners utilizing videostroboscopy in the evaluation of vocal disorders due to laryngeal pathologies.|The opening part of the book, in which stroboscopy is introduced and a detailed description of vocal fold vibration is provided, will enable readers to comprehend the visual data that is elicited by videostroboscopy. In later chapters, clinical procedures, protocols, administration guidelines and interpretation are covered in detail. One of the highlights of the book is the chapter featuring the most common laryngeal pathologies, their acoustic characteristics and vibratory patterns as seen in videoprints. The book's numerous clinical forms and extensive references make it valuable both as a clinical training book and professional source of reference.

A small minority of children and adolescents can be dangerous, violent and murderous. As such, they shatter society's warm images of childhood play and innocence. When a horror story such as the murder of James Bulger hits the headlines, there is much spurious and fanciful comment but little attempt at serious explanation which might enhance public and professional understanding of this disturbing phenomenon. Gwyneth Boswell researched this field throughout the 1990s. Having identified an urgent need for an assembly of evidence about aetiology and treatment of these young people, she has brought together a formidable body of academic and professional experts, specifically to address the question "Why?"

Written for parent and professionals working with children and young people with visual impairment, this work examines the causes of eye conditions and additional disabilities; how these can restrict access to the mainstream curriculum; and ways in which the effects can be ameliorated. Central to the text is entitlement. National Curriculum areas are discussed, and attention is given to both the hidden curriculum and specialist curriculum and extra curricula activities, and to the competencies required by staff working with these children and young people.

TABLE OF CONTENTS:

Implications of a visual impairment; blindness and low vision; the child and young person with a visual impairment; the special curriculum; access to the curriculum; the mainstream curriculum; principles of access; additional disabilities.

This work on vocal fold physiology comprises sections on phonatory mechanisms, voice source acoustics and parameterization, physiology, and assessment of the laryngeal function.

Contents:

Part 1 Phonatory mechanisms: vibratory behaviour of human vocal folds viewed from below; physiological properties and wave motion of the vocal fold membrane viewed from different directions; ultrasound laryngography - multiple simultaneous recording of vocal fold vibration; basement membrane zone injury in vocal nodules. Part 2 Voice source acoustics and parameterization: vocal-fold vibration for obstruent consonants; vocal-fold vibration in a computer model of a larynx; comments on glottal flow modelling and analysis; simultaneous modelling of EGG, PGG and glottal flow; phonation from a continuum mechanics point of view; an investigation into the acoustics and aerodynamics of the larynx; generalized translaryngeal pressure coefficient for a wide range of laryngeal configurations; effects of downstream occlusions on pressures near the glottis in singing; numerical simulations of glottal flow; damping-biomechanics of vocal fold oscillation; voice source variations in running speech; male and female voice source dynamics; mechanisms underlying the control of fundamental frequency; airflow-based analysis of vocal function; intrinsic vowel F0 and phrase final F0 lowering - phonological vs biological explanations; intrinsic pitch of vowels - a complicated problem with an obvious solution? Part 3 Physiology: comparison of physiological properties of PAG and medullary neurons involved in vocalization; influence of pitch and intensity on cricothyroid and thyroarytenoid in singers and non-singers; F0 raising role of the sternothyroid muscle - an electromyographic study of two tenors; the postganglionic sympathetic innervation of the larynx in cats; neurophysiological control of vocal fold adduction and abduction for phonation onset and offset during speech. Part 4 Assessment of laryngeal function: laryngeal manual compression in the evaluation of patients for laryngeal framework surgery; clinical applications of high-speed digital imaging of vocal fold vibration; vocal fold closure, perceived breathiness and acoustic characteristics in normal adult speakers; perceptual evaluation of a glottal source model for voice quality control; some acoustical, perceptual and physiological aspects of vocal quality; insufficient vocal fold closure as studied by inverse filtering; acoustic analysis, synthesis and perception of breathy voice; the effect of vocal fold surgery on the speech cepstrum; acoustic and perceptual characterization of vocal nodules; videostroboscopic evaluation of glottal open quotient, related to some acoustic parameters; control of laryngeal vibration in register change.

This text presents multidimensional perspectives on voice from speech and voice scientists, physiologists, otolaryngologists and acousticians. Six aspects of the laryngeal mechanism have been explored, spanning the cellular structure of the vocal folds to higher level motor and sensory organization for vocalization. Dr Titze has succeeded in formulating chapters that present state-of-the-art information broadening the theroetical base of laryngeal science from which future studies will emerge.

Contents:

Molecular and cellular structure of vocal fold tissue, Steven D. Gray, et al; muscle energetics, vocal efficiency and laryngeal biomechanics, Donald S. Cooper, et al; practical flow duct acoustics applied to the vocal tract, P.O.A.L. Davies, et al; evidence of chaos in vocal fold vibration, Ingo R. Titze, et al; co-ordination of the respiratory and laryngeal systems in breathing and vocalization, Pamela J. Davis, et al; higher level motor and sensory organization, Charles R. Larson, et al.

An international standard text in the field, this edition has undergone a major rewriting by the two authors. New material has been added to cover the latest developments in the field, including the perceptual and instrumental assessment of dysphonia.

The first half of this book provides an outline of the structure and function of a voice clinic, a review of the structure and function of the vocal tract and an outline of the most common forms of voice disorder likely to be encountered in a clinic. It also provides brief descriptions of the various forms of therapy available for the treatment of non-cancerous voice disorder and suggests appropriate treatment modalities.|The second half of the book is based in science and contains an overview of the instrumentation available for the investigation and documentation of voicing.