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Vestibular Evoked Myogenic Potentials

Vestibular Evoked Myogenic Potentials
Author: Srinivasamurthy Ravi Prakash
Publisher:
Total Pages: 144
Release: 2009
Genre:
ISBN:

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(cont.) In the second part of the thesis, we develop a computational model of VEMP physiology, and use the model to separate external sources of variability from internal noise. The model outputs are also used to define a statistical measure, the inverse coefficient of variation (iCOV), which correlates with altered vestibular sensitivity, but is relatively robust to other changes. When applied to the experimental data, the iCOV is found to yield estimates of vestibular sensitivity that are more stable than the conventional VEMP amplitude. This measure also reveals a diversity of response threshold and growth characteristics within the clinically normal population. These findings suggest that the proposed approach could lead to the development of an improved clinical tool, but could also yield new insights into the physiological mechanisms of vestibular pathology.


Vestibular disorders in children

Vestibular disorders in children
Author: Jun Yang
Publisher: Frontiers Media SA
Total Pages: 140
Release: 2023-03-24
Genre: Medical
ISBN: 2832517862

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Manual of Pediatric Balance Disorders, Second Edition

Manual of Pediatric Balance Disorders, Second Edition
Author: Robert C. O'Reilly
Publisher: Plural Publishing
Total Pages: 475
Release: 2020-01-24
Genre: Medical
ISBN: 1635501482

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This thoroughly updated second edition of Manual of Pediatric Balance Disorders remains a vital resource for clinicians and students specializing in pediatric vestibular and balance disorders. The text is organized for effective use in the clinic, classroom, bedside, or laboratory, and is separated into four parts: Basic Mechanisms, Clinical Evaluation, Pediatric Vestibular Disorders, and Treatment. Each chapter ends with Self-Assessment Questions to aid in reader comprehension and address important chapter topics. Manual of Pediatric Balance Disorders features contributions from 45 experts across the fields of otolaryngology, audiology, neurology, and physical therapy, and represents the distillation of years of cumulative clinical and research experience. New to the Second Edition: * New Co-Editor, Jacob R. Brodsky, MD, FACS, FAAP *Five new chapters with the latest research and findings on various testing and topics in pediatric balance disorders o Chapter 7. Video Head Impulse Testing (vHIT) o Chapter 12. New Horizons for the Evaluation of Functional Balance, Self-Motion Perception, Navigation, and Mobility o Chapter 13. Genetics and Metabolism in Pediatric Vestibular Disorders o Chapter 15. Benign Paroxysmal Positional Vertigo (BPPV) o Chapter 24. Vertigo, Dizziness and Mental Health * Fully rewritten chapters on migraine and concussion * Updated references and self-assessment questions throughout * Includes videos


Vertigo and Dizziness across the Lifespan, An Issue of Otolaryngologic Clinics

Vertigo and Dizziness across the Lifespan, An Issue of Otolaryngologic Clinics
Author: Bradley W. Kesser
Publisher: Elsevier Health Sciences
Total Pages: 286
Release: 2011-04-28
Genre: Medical
ISBN: 1455709727

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Dizziness comes in many forms in each age group – some specific to an age group (e.g. benign paroxysmal vertigo of childhood) while others span the age spectrum (e.g., migraine-associated vertigo). This content organizes evaluation and management of the dizzy patient by age to bring a fresh perspective to seeing these often difficult patients. The pediatric section begins with a review of vestibular embryology and physiology and moves toward a comprehensive discussion of methods – both bedside and in the vestibular lab - to evaluate the child with dizziness, or “clumsiness, concluding with an exploration of the differential diagnosis of dizziness and relevant findings. Dizziness in the adolescent points to migraine headache as a common cause, enumerates treatment strategies for migraine-associated vertigo, and offers guidelines for when to image the adolescent with dizziness.Adult dizziness is more a compilation of the relevant diagnoses, but the section starts with dizziness that can affect young adults – especially members of our Armed Forces fighting overseas – traumatic brain injury/blast injury. This content also has relevance for patients inmotor vehicle accidents and head injury patients. Medicolegal aspects of evaluation and management of dizzy patients are succinctlycovered in “Evaluation of Dizziness in the Litigating Patient. The final chapter in this section, “Other Causes of Dizziness, provides a very thorough overview of unusual causes of dizziness in the adult population.Dizziness associated with advancing age is quite common and often multifactorial, as is highlighted in the chapter “Dizziness in theElderly. A comprehensive review of the posterior cerebral circulation, transient ischemic attacks, and posterior circulation stroke is presented in the chapter, “Vertebrobasilar Insufficiency. No coverage of dizziness in the elderly is complete without an exposition of polypharmacy and medication effects. Other common diagnoses of dizziness in the elderly are thoughtfully reviewed along with a survey of new and old techniques to rehabilitate the older patient with dizziness or disequilibrium.Patients presenting with dizziness can harbor serious, if not life-threatening, conditions such as stroke, brain abscess, or severe chronic ear disease. At the end of several articles, the reader will find a relevant table – What Not To Miss – a list of clinically significant signs and symptoms not to ignore, or conditions (differential diagnosis) that may masquerade as that discussed in the chapter but criticallyimportant that the practitioner should not overlook in the evaluation of the patient. Many articles in this edition start with a clinical scenario so the reader can recognize common presenting symptoms, demographic features, and factors in the medical history that will aid in making the diagnosis.


Index Medicus

Index Medicus
Author:
Publisher:
Total Pages: 2520
Release: 2004
Genre: Medicine
ISBN:

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Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.


Vestibular Evoked Myogenic Potential

Vestibular Evoked Myogenic Potential
Author: Toshihisa Murofushi
Publisher: Springer Science & Business Media
Total Pages: 112
Release: 2009-03-28
Genre: Medical
ISBN: 443185908X

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The vestibular labyrinth consists of ? ve compartments: the lateral, anterior, and posterior semicircular canals, the utricule, and the saccule. At the beginning of the twentieth century, Robert Bárány proposed the caloric test as a clinical test of the lateral semicircular canal. This test enabled clinicians to assess the individual lateral semicircular canal function easily by using the simple method of irrigating the external ear canal with cold or warm water and observing the induced nyst- mus. We believe that the caloric test was a breakthrough in the ? eld of vestibular research. However, as far as the other compartments were concerned, there was no simple clinical test equal to the caloric test for the lateral semicircular canal function. At the end of the twentieth century, the vestibular evoked myogenic potential (VEMP) test was proposed as a new method for assessing the individual saccule function. This test has some unique attributes. First, it uses sound stimulation, even though it is a test of the vestibular system. This appears to be a contradiction n- rophysiologically. As a result, in its early stages there were controversies conce- ing the origin of the responses. However, such controversies have been overcome by basic neurophysiological studies and clinical studies. Above all, sound sensit- ity of the saccular afferents shown in cats and guinea pigs with single-unit recording methods became the main supporting evidence. Nowadays, VEMP is one of the routine clinical tests for balance disorder.


Issues in Neurology Research and Practice: 2011 Edition

Issues in Neurology Research and Practice: 2011 Edition
Author:
Publisher: ScholarlyEditions
Total Pages: 5151
Release: 2012-01-09
Genre: Medical
ISBN: 1464963568

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Issues in Neurology Research and Practice / 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Neurology Research and Practice. The editors have built Issues in Neurology Research and Practice: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Neurology Research and Practice in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Neurology Research and Practice: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.


Vertigo and Dizziness

Vertigo and Dizziness
Author: Béla Büki
Publisher: OUP Oxford
Total Pages: 193
Release: 2013-12-19
Genre: Medical
ISBN: 0191501921

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Vertigo and dizziness rate among the most frequently occurring presenting complaints in neurology and in general medical practice. Since most patients do not have acute complaints at the time of examination, the clinician requires keen judgment in making a diagnosis, as patients often report confusing, real, or hypothetical causes of their problems. An improvement in the scientific understanding of vestibular physiology in recent years has led to the development of new diagnostic tests and more effective therapies. However, many of these advances have been slow to be adopted into routine clinical practice. Part of the Oxford Neurology Library (ONL) series, Vertigo and Dizziness helps clinicians improve their management of patients with these conditions. The text provides an overview of clinical vestibular physiology as well as of the latest developments in bedside examination, diagnosis/differential diagnosis, and state-of-the-art therapy. Vertigo and Dizziness serves as an essential clinical guide for neurologists, otorhinolaryngologists, and trainees in those disciplines, and for general practitioners and medical students.