Publications by authors named "Michelle Petrak"
Article Synopsis
- Saccadometry is an advanced test designed to evaluate the brain regions responsible for fast and precise eye movements through prosaccade and antisaccade tasks that increase in difficulty.
- The study aimed to create a simplified clinical saccadometry protocol using video oculography to establish evaluation standards for adults aged 18 to 69.
- Results showed age and gender differences in various eye movement metrics, highlighting the potential of saccadometry as an objective tool for clinicians to assess complex cognitive and motor functions.
Background: Research on the otolith organs remains inconclusive.
Objectives: This study seeks to further elucidate utricular function in patients with Meniere's disease (MD) in three ways: (1) We aimed to disambiguate the role of the Subjective Visual Vertical (SVV) and Ocular Vestibular Evoked Myogenic Potential (o-VEMP) tests regarding which utricular subsystem each is measuring. (2) We sought to characterize the acute and chronic state of MD by identifying differences in the relationship of SVV and o-VEMP results across patients with acute and chronic MD.
We currently interpret the video Head Impulse Test (vHIT) results mainly based on the gain value. The purpose of this study is to evaluate vHIT results for both gain and re-fixation saccades on unilateral definite Meniere's disease (MD) subjects in comparison with normal healthy subjects. Forty unilateral definite MD subjects and age-matched healthy subjects were recruited.
View Article and Find Full Text PDFThe subjective visual vertical (SVV) is the most frequently assessed modality of verticality perception and has been measured in a variety of clinical situations, including peripheral vestibular lesions. The main objectives are (1) to collect normative data of Virtual SVV™ from healthy subjects, and (2) to study the correlation between Virtual SVV™ and ocular vestibular-evoked myogenic potentials (o-VEMP) on healthy subjects. Forty-three healthy subjects were recruited.
View Article and Find Full Text PDFObjective: The purpose of this study was to describe the variability and test-retest reliability of a commercially available subjective visual vertical (SVV) system known as Virtual SVV (Interacoustics). In addition, the study aimed to compare the reliability of the Virtual system with a previously established bucket test of SVV.
Study Design: Fifteen participants with normal hearing, normal middle ear function, and normal utricular function were included in the study.