Show simple item record

dc.creatorAl Sharif, Doaa S.
dc.creatorTucker, Carole A.
dc.creatorCoffman, Donna L.
dc.creatorKeshner, Emily A.
dc.description.abstractBACKGROUND: No objective criteria exist for diagnosis and treatment of visual-vestibular mismatch (VVM). OBJECTIVE: To determine whether measures of electrodermal activity (EDA) and trunk acceleration will identify VVM when exposed to visual-vestibular conflict. METHODS: A modified VVM questionnaire identified the presence of VVM (+ VVM) in 13 of 23 young adults (34 ± 8 years old) diagnosed with vestibular migraine. Rod and frame tests and outcome measures for dizziness and mobility were administered. Participants stood on foam while viewing two immersive virtual environments. Trunk acceleration in three planes and electrodermal activity (EDA) were assessed with wearable sensors. Linear mixed effect (LME) models were used to examine magnitude and smoothness of trunk acceleration and tonic and phasic EDA. Welch’s t-test and associations between measures were assessed with a Pearson Correlation Coefficient. Effect sizes of group mean differences were calculated using Cohen’s d test. RESULTS: Greater than 80% of all participants were visually dependent. Outcome measures were significantly poorer in the + VVM group: tonic EDA was lower (t(417)=-4.31,p < 0.001) and phasic EDA higher (t(417) = 4.35, p < 0.001). Postural accelerations varied across groups; LME models indicated a relationship between visual context, postural, and ANS responses in the + VVM group. CONCLUSIONS: Lower tonic EDA with + VVM suggests canal-otolith dysfunction. The positive association between vertical acceleration, tonic EDA, and visual dependence suggests that increased vertical segmental adjustments are used to compensate. Visual context of the spatial environment emerged as an important variable to control when testing or treating VVM.
dc.format.extent25 pages
dc.relation.ispartofFaculty/ Researcher Works
dc.rightsAttribution CC BY
dc.subjectVestibular migraine
dc.subjectVirtual reality
dc.subjectVirtual environments
dc.subjectVisual dependence
dc.titleThe Effects of Visual Context on Visual-Vestibular Mismatch Revealed by Electrodermal and Postural Response Measures
dc.description.departmentPhysical Therapy
dc.description.departmentEpidemiology and Biostatistics
dc.description.departmentHealth and Rehabilitation Sciences
dc.ada.noteFor Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact
dc.description.schoolcollegeTemple University. College of Public Health
dc.temple.creatorAl Sharif, Doaa S.
dc.temple.creatorCoffman, Donna L.
dc.temple.creatorKeshner, Emily A.

Files in this item


This item appears in the following Collection(s)

Show simple item record

Attribution CC BY
Except where otherwise noted, this item's license is described as Attribution CC BY