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Mental tasking and rotary Chair-Induced vestibular nystagmus utilizing Video-Oculography

Objective: To investigate whether the use of mental tasking, when compared to no mental task, affects measurement of nystagmus response with regard to gain, phase & symmetry, and artefact when utilising video-oculography (VOG) as the measurement technique in rotary chair testing (RCT). Design: A...

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Published in:International journal of audiology 2020-04, Vol.59 (5), p.360-366
Main Authors: Doettl, Steven M., Easterday, Mary K., Plyler, Patrick N., Behn, Lacey L., Poget, Allison S.
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Language:English
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cited_by cdi_FETCH-LOGICAL-c436t-a2c110c2585dc704181f73c8e43c0e410ad67342f4bdb89e946e25a2129f96533
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creator Doettl, Steven M.
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description Objective: To investigate whether the use of mental tasking, when compared to no mental task, affects measurement of nystagmus response with regard to gain, phase & symmetry, and artefact when utilising video-oculography (VOG) as the measurement technique in rotary chair testing (RCT). Design: A within-subject repeated-measures design was utilised. Study samples: Seventeen (17) healthy adults were evaluated (age 22-25 years). Each participant underwent slow harmonic acceleration (SHA) testing for 0.01, 0.02, 0.04, 0.08, and 0.16 Hz using RCT at two separate counterbalanced visits. At one visit mental tasking was utilised while the other visit did not utilise mental tasking. The following outcomes were measured for each visit: gain, phase, symmetry, and artefact. Results: No significant difference between the tasking conditions with regard to gain, phase, symmetry, or artefact. Significant frequency affects were noted, as expected, for gain, phase, and artefact. Analysis of individual subject data did, however, describe significant effects of tasking with regard to gain, phase, symmetry, and artefact. Conclusion: These results suggest that the use of mental tasking during RCT using VOG had no significant group effect on SHA gain, phase, symmetry, and artefact. However, individual subject effects were observed indicating variability in the effects of mental tasking during RCT.
doi_str_mv 10.1080/14992027.2019.1706768
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source Taylor and Francis:Jisc Collections:Taylor and Francis Read and Publish Agreement 2024-2025:Medical Collection (Reading list)
subjects mental tasking
rotary chair
Vestibular
vestibulo-ocular reflex
video-oculography
title Mental tasking and rotary Chair-Induced vestibular nystagmus utilizing Video-Oculography
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