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.
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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.

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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.

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The 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.

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Objective: 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.

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