Electronystagmography/Videonystagmography

Devin Lochlan McCaslin, PhD Devin Lochlan McCaslin, Ph.D., Vanderbilt Bill Wilkerson Center, Dvision of Audiology, Balance Disorders Clinic, Nashville, Tennessee.

Preface Acknowledgments 1 Neural Control of Eye Movements Introduction Hierarchy of the Oculomotor System The "Final Common Pathway" of the Oculomotor System Premotor System Saccade System Pursuit System Gaze-Holding: The "Neural Integrator" Optokinetic System 2 Anatomy and Physiology of the Vestibular System Introduction 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 The VOR During Sustained Movement 3 Peripheral Vestibular Impairment and Central Nervous System Compensation Introduction Effect of Unilateral Vestibular Lesions Neural Basis of Vestibular Compensation Laws of Compensation Caloric Stimulation of the Vestibular System 4 Pretest Procedures for VNG Introduction Case History Assessment of Dizziness Handicap Chronic Subjective Dizziness Gross Eye Movement Examination Otoscopic Examination The VNG Environment 5 Eye Movement Examination Introduction Instrumentation EOG/ENG: Corneoretinal Potential Using the CRP to Record Eye Movements Saccade Test Gaze Test Smooth Pursuit Tracking Test Optokinetic Test 6 Positional and Positioning Testing Static Positional Testing Positioning Testing Treatment of Benign Paroxysmal Positioning Vertigo 7 The Caloric Test Introduction Components of the Caloric Test Instrumentation Preparation for the Caloric Test Caloric Test Technique Analysis of Caloric Responses Interpretation of Caloric Responses Technical Tips for Caloric Testing Appendix A. Dizziness Questionnaire Appendix B. A Patient's Guide to Benign Paroxysmal Positional Vertigo (BPPV) Appendix C. Vanderbilt Balance Disorders Laboratory Patient Brochure Appendix D. Your Balance in 4 Pages Counseling Material Appendix E. Example Alerting Tasks for Vestibular Testing Appendix F. Reliability and Localizing Value of VNG Findings References Index