Main description:

Electronystagmography 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

Contents:

Preface

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