The goal of this study is to test the consistency and repeatability of a portable goggle system for testing optokinetic, ocular, and reaction time. The study examines the day to day consistency, time of day and learning effects as well as any secondary motion sickness.
The goal of this study was to test the constancy and repeatability of this test by testing it in different individuals and different times of day, after a variety of tasks and after repeated performance
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
78
PAS goggle is a self-contained stimulus and sensing device that is designed to deliver the visual stimuli currently delivered via light projected on a wall while simultaneously recording the movement of the eyes. Each vestibular testing session last about 15 minutes.
University of Miami Miller School of Medicine
Miami, Florida, United States
Vestibular Reaction Times
Repeatability, variation and learning effect of vestibular testing of PAS goggles will be evaluated using the test results on both sessions for the following sub-tests: a) Visual Reactive Time (VRT), b) Saccades and Reaction Time (SRT) Saccade Latency, c) SRT Motor Latency, and d) Auditory Reaction Time (ART). ART, VRT and SRT subtests are all evaluated in msec.
Time frame: 2 Days
Vestibular Subjective Visual Vertical
Repeatability, variation and learning effect of vestibular testing of PAS goggles will be evaluated using the test results on both sessions for the Subjective Visual Vertical sub-test assessed in degrees.
Time frame: 2 Days
Vestibular Smooth Pursuit Horizontal
Repeatability, variation and learning effect of vestibular testing of PAS goggles will be evaluated using the test results on both sessions for the Smooth Pursuit Horizontal (SPH) sub-tests in degree squared per second.
Time frame: 2 Days
Vestibular Percentage of Saccade
Repeatability, variation and learning effect of vestibular testing of PAS goggles will be evaluated using the test results on both sessions for the sub-tests Smooth Pursuit Horizontal (SPH) evaluated as percentage of saccades completed.
Time frame: 2 Days
Vestibular Anti-Saccade
Repeatability, variation and learning effect of vestibular testing of PAS goggles will be evaluated using the test results on both sessions for the Anti-saccade sub-test evaluted in Percent Error.
Time frame: 2 Days
Vestibular Gain
Repeatability, variation and learning effect of vestibular testing of PAS goggles will be evaluated using the test results on both sessions for the following sub-tests: a) OKN at 60 degrees/second, and b) Smooth Percent Horizontal Velocity. Subtests are all evaluated in gain (output/input in decimal form)
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Time frame: 2 Days
Vestibular Saccade Horizontal
Repeatability, variation and learning effect of vestibular testing of PAS goggles will be evaluated using the test results on both sessions for the Saccade Horizontal sub-tests evaluated in seconds.
Time frame: 2 Days
Vestibular Predictive Saccade
Repeatability, variation and learning effect of vestibular testing of PAS goggles will be evaluated using the test results on both sessions for the subtest Predictive Saccade (PS) evaluated as percentage of prediction.
Time frame: 2 Days
Motion Sickness as Measured by the MSAQ
Motion sickness is measured by the subjects being given a motion sickness assessment questionnaire (MSAQ). The MSAQ is a validated measure of motion sickness and in this questionnaire the examiner asks subjects 16 questions. Subjects score each question as "not at all" (score of zero) or on a seventy scale of 1-9. The total score ranging from 0-144 with the score reported as a percentage. The higher percentage score indicates more motion symptoms experienced by the subjects.
Time frame: Day 1