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Using EVestG Assessments for Detection of Symptomology Consequent to a Lateral-Impact Concussion

  • Abdelbaset Suleiman
  • Brian Lithgow
  • Behzad Mansouri
  • Zahra Moussavi
Original Article

Abstract

This study was conducted to investigate plausible differences in vestibular response due to lateral-impact concussion using electrovestibulography (EVestG). EVestG signals are recorded non-invasively from the external ear in response to vestibular stimuli; the EVestG signal consists of peripheral vestibulo-acoustic signals and the brainstem’s response. In this study we investigated the relationship between characteristic features of the extracted field potentials (FPs) of EVestG signals in participants with lateral-impact concussion in comparison with those of healthy controls. Twelve lateral-impact concussed participants (5 right and 6 left lateral-impact) and 12 age-and-gender-matched healthy controls were tested by EVestG. Characteristic features were extracted from the FPs during side tilt, and a leave-one-out linear discriminant analysis (LDA) classification was applied to the extracted features. The results show a clear asymmetry on the impacted side between the left and right FPs after lateral-impact compared to those from healthy controls. The LDA classification resulted in a sensitivity of 67%, specificity of 92 and 79% overall accuracy for separating lateral-impact concussed participants from controls. EVestG appears to have diagnostic potential in diagnosing lateral-impact concussion.

Keywords

Vestibular Lateral-impact Concussion Coup/contrecoup impact Electrovestibulography (EVestG) 

Notes

Acknowledgements

This study was supported by MITACS, Neural Diagnostics Canada Ltd. and Riverview Health Centre Foundation.

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Copyright information

© Taiwanese Society of Biomedical Engineering 2018

Authors and Affiliations

  1. 1.Biomedical Engineering ProgramUniversity of ManitobaWinnipegCanada
  2. 2.Riverview Health CenterWinnipegCanada
  3. 3.Department of Internal Medicine (Neurology)University of ManitobaWinnipegCanada
  4. 4.Department of Electrical & Computer EngineeringUniversity of ManitobaWinnipegCanada
  5. 5.Monash Alfred Psychiatry Research CentreAlfred Hospital and Monash UniversityMelbourneAustralia
  6. 6.Department of OphthalmologyUniversity of ManitobaWinnipegCanada

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