Motion Sickness
Conditions
Brief summary
The purpose of this study is to improve current galvanic vestibular stimulation (GVS) technology to ease the motion sickness often associated with virtual reality (VR) simulation.
Detailed description
The Three-Axis Wearable Adaptive Vestibular Stimulator (3WAVeS) technology that combines galvanic vestibular stimulation (GVS) and Virtual Reality (VR) will not only increase VR-based simulation realism and presence, but will also mitigate the motion sickness often associated with VR simulation by re-coupling the vestibular and ocular inputs to the VR user. Additionally, due to GVS technology's ability to accurately provide continuous inputs to the vestibular system, 3WAVeS can intentionally simulate high-fidelity effects of spatial disorientation for training purposes.
Interventions
Four electrodes, forehead, behind both ears, and back of your neck, provide bidirectional electrical stimulation and receive information about the amplitude delivered accounting for skin impedance
OTHERFlight simulations in virtual reality (VR)
Highly immersive, 3D virtual flight simulation environment
OTHER3-DOF Bertec Portable Essential's dual-balance force plate system
Firm surface/plate to stand on while being presented disorienting visual patters of moving vertical and/or horizontal bars of alternating black and white.
Sponsors
Mayo Clinic
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
SINGLE (Subject)
Masking description
Participants will be blinded to the galvanic stimulation (GVS) intervention.
Eligibility
Sex/Gender
ALL
Age
21 Years to 55 Years
Healthy volunteers
Yes
Inclusion criteria
* For our purposes, participants must be able to consent to participate themselves and be 21 to 55 years of age * Must be able to attend in-person sessions at the Mayo Aerospace Medicine and Vestibular Research Laboratory in Scottsdale, AZ. * No racial/ethnic groups will be excluded, although all participants must be fluent speakers of English.
Exclusion criteria
\- History of vestibular disease, migraine, or significant balance disorder; history of severe motion sensitivity, women who are pregnant.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| COG Sway velocity | Immediately after balance testing in each session, approximately 1 hour | The sway angle of the center of gravity (COG) is the measure the amount of sway in any direction. The COG sway velocity is the ratio of the distance traveled by the COG (degrees) to the time (sec) of the trial. |
| Pensacola Diagnostic Index-based motion sickness questionnaire | Immediately after each flight stimulation session, approximately 1 hour | This index allowed a comparison of motion sickness severity across subjects that may each present with a different constellation of symptoms like nausea, skin color, sweating, salivation, drowsiness, headache, and dizziness. The approach is to have the subject and/or observer grade the subjective intensity of different modalities of symptoms and signs (described below) as slight, moderate or severe. Overall motion sickness severity is then derived from a sum of scores resulting in a weighted "malaise index". |
Countries
United States
Contacts
PRINCIPAL_INVESTIGATORGaurav Pradhan, PhD
Mayo Clinic
Outcome results
None listed