Reliability and Normative Data for the Dynamic Visual Acuity Test for Vestibular Screening

Hypothesis: The purpose of this study was to determine reliability of computerized dynamic visual acuity (DVA) testing and to determine reference values for younger and older adults. Background: A primary function of the vestibular system is to maintain gaze stability during head motion. The DVA test quantifies gaze stabilization with the head moving versus stationary. Commercially available computerized systems allow clinicians to incorporate DVA into their assessment; however, information regarding reliability and normative values of these systems is sparse. Methods: Forty-six healthy adults, grouped by age, with normal vestibular function were recruited. Each participant completed computerized DVA testing including static visual acuity, minimum perception time, and DVA using the NeuroCom inVision System. Testing was performed by two examiners in the same session and then repeated at a follow-up session 3 to 14 days later. Intraclass correlation coefficients (ICCs) were used to determine inter-rater and test–retest reliability. Results: ICCs for inter-rater reliability ranged from 0.323 to 0.937 and from 0.434 to 0.909 for horizontal and vertical head movements, respectively. ICCs for test–retest reliability ranged from 0.154 to 0.856 and from 0.377 to 0.9062 for horizontal and vertical head movements, respectively. Overall, raw scores (left/right DVA and up/down DVA) were more reliable than DVA loss scores. Conclusion: Reliability of a commercially available DVA system has poor-to-fair reliability for DVA loss scores. The use of a convergence paradigm and not incorporating the forced choice paradigm may contribute to poor reliability

Contemporary Issues in Vestibular Assessment

This session is developed by, and presenters invited by, Hearing, Balance, Tinnitus – Assessment and Intervention: Adult. This presentation will provide an overview of contemporary measures of vestibular function with a focus on advantages, limitations, and clinical usefulness. The implementation and outcome of a triage clinic for patients suspicious of benign paroxysmal positional vertigo will also be described

Patterns of Vestibular Findings Among Veterans Presenting with Dizziness to the Vestibular Clinic

The purpose of this session is to present data on the patterns of clinical findings in Veterans referred for vestibular assessment. Specifically, we will examine the proportion of abnormalities of the horizontal semi-circular canal and the otolith organ pathways

Contemporary Issues in Vestibular Assessment

Book Summary: With advancements across various scientific and medical fields, professionals in audiology are in a unique position to integrate cutting-edge technology with real-world situations. Scientific Foundations of Audiology provides a strong basis and philosophical framework for understanding various domains of hearing science in the context of contemporary developments in genetics, gene expression, bioengineering, neuroimaging, neurochemistry, cochlear and mid-brain implants, associated speech processing and understanding, molecular biology, physics, modeling, medicine, and clinical practice

Slow Harmonic Acceleration: Normal Values & the Effect of Age

The purpose of this session is to present normative data for slow harmonic acceleration (SHA) on rotary chair in healthy individuals ranging in age from 18 to 72 years. Eye movement was recorded using video-oculography during SHA at frequencies of 0.01, 0.04, 0.016, and 0.64 Hz

The Clinical Utility of Slow Harmonic Acceleration as Compared to Caloric Irrigations

The purpose of this session is to examine the clinical utility of slow harmonic acceleration (SHA) during rotary chair testing by comparing the response characteristics of SHA to caloric irrigations in 800 patients with dizziness

Interdisciplinary Approach to Dizziness: Roles of Audiology and Physical Therapy

Dizziness is one of the most common reasons patients seek medical care, and because there are many causes of dizziness, management of these patients requires an interdisciplinary approach. Peripheral vestibular dysfunction is the most common cause of dizziness/vertigo diagnosed in specialty clinics. The purpose of this article is to present an interdisciplinary approach to the management of patients with vestibular dysfunction with a focus on the unique and overlapping contributions of audiology and physical therapy to vestibular assessment and rehabilitation