Description
Book SynopsisElectronystagmography and Videonystagmography (ENG/VNG), Second Edition remains a practical and portable resource for conducting and interpreting the electronystamography/ videonystagmography examination. In order to provide a foundation for understanding ENG/VNG test results, the early sections of the text are dedicated to a description of normal and impaired peripheral and central vestibular system function. Also addressed is the process of central nervous system compensation. These sections are followed by a description and interpretation of the ENG/VNG subtests including: an expanded ocular motor testing section, positional/ing testing, and caloric testing. The text now also includes a chapter describing the most common disorders causing dizziness and provides the diagnostic criterion for each. Finally, examples of counseling materials and illustrative case studies that serve to highlight the principles and techniques covered in the manual are provided. Graduate students and practicing clinicians will benefit from this unitary source for protocols and procedures required for completing an ENG/VNG examination. New to the Second Edition: New illustrations demonstrate key concepts within the text New and updated references throughout New chapter describing common disorders Updated and expanded chapter on ocular motor function
Table of ContentsPreface Acknowledgments Chapter 1. Neural Control of Eye Movements Introduction Hierarchy of Oculomtor System The Final Common Pathway of the Oculomotor System The Functional Classes of Eye Movements Eye Movements that Keep the Fovea Fixed on a Target Optokinetic System Chapter 2. Anatomy and Physiology of the Vestibular System Introduction The Sensory Transduction of the Peripheral System Vestibular Hair Cells Semicircular Canal Anatomy and Physiology Otolith Organ Anatomy and Physiology Primary Vestibular Afferent Projections Anatomy of the Central Vestibular System Vestibular Nystagmus Generated by Head Movement The VOR during Sustained Movement Peripheral Vestibular Impairment and Central Nervous System Compensation Impaired Central Nervous System Compensation Laws of Compensation Chapter 3. Pretest Procedures for VNG Introduction Case History The Dizziness Symptom Profile (DSP) Assessment of Dizziness Handicap Bedside Evaluation of the Ocular Motor System Otoscopic Examination The VNG Environment Chapter 4. Eye Movement Examination Introduction Instrumentation EOG/ENG: Corneoretinal Potential Using the CRP to Record Eye Movements Voluntary Saccade Test Gaze Test Smooth Pursuit Tracking Test Optokinetic Test Chapter 5. Positional Testing Static Positional Testing Positioning Testing Treatment of Benign Paroxysmal Positioning Vertigo Chapter 6. The Caloric Test Introduction Caloric Stimulation of the Vestibular System Components of the Caloric Test Instrumentation Preparation for the Caloric Test Procedure for Conducting the Alternating Binaural Bithermal Caloric Test (Water and Air) Caloric Test Technique Analysis of Caloric Responses Interpretation of Caloric Responses Summary: Significance of a Directional Preponderance Technical Tips for Caloric Testing Chapter 7. Common Vestibular Disorders: Clinical Presentation Introduction Common Disorders Causing Dizziness Appendix A. Dizziness Questionnaire Appendix B. Understanding Dizziness Appendix C. Pediatric Literature for Understanding Dizziness Appendix D. Example Alerting Tasks for Vestibular Testing Appendix E. Reliability and Localizing Value of VNG Findings References Index
