The Role of Predictability in Saccadic Eye Responses in the Suppression Head Impulse Test of Horizontal Semicircular Canal Function

Frontiers in Neurology
Jorge Rey-MartinezEduardo Martin-Sanz

Abstract

In the suppression head impulse paradigm (SHIMP) vHIT protocol, the participant is instructed to follow with his gaze a mobile target generated by a laser placed on the participant's head. Recent studies have reported that the refixation saccade latencies are in relation with the time evolution of the vestibular dysfunction in both (standard and SHIMP) procedures. We hypothesized that some central mechanisms like head impulse prediction could be one of the causes for the differences in the saccadic eye responses. A prospective cohort non-randomized study was designed. For the SHIMP protocol, recorded with the ICS Impulse ver. 4.0(®) (Otometrics A/S, Taastrup, Denmark) vHIT device, three different algorithms were performed: "predictable," "less predictable," and "unpredictable" depending on the target's predictability. A mathematical method was developed to analyze the SHIMP responses. The method was implemented as an additional tool to the MATLAB open source script for the extended analysis of the vHIT responses named HITCal. In cohort 1, 52 participants were included in "predictable" SHIMP protocol. In cohort 2, 60 patients were included for the "less predictable" and 35 patients for the "unpredictable" SHIMP protocol. The par...Continue Reading

References

Nov 1, 2001·Archives of Otolaryngology--head & Neck Surgery·S J HerdmanR J Tusa
Mar 27, 2002·Experimental Brain Research·I S Curthoys
Sep 11, 2002·Archives of Otolaryngology--head & Neck Surgery·Charles C Della SantinaLloyd B Minor
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Apr 11, 2015·Acta Oto-laryngologica·Jorge Rey-MartinezNicolás Perez Fernandez
Jun 2, 2017·Otology & Neurotology : Official Publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·Eduardo Martin-SanzRicardo Sanz-Fernandez
Jun 27, 2017·Frontiers in Neurology·G M HalmagyiIan S Curthoys

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Citations

Apr 18, 2019·Journal of Neurophysiology·Helen S Cohen
Oct 31, 2018·Journal of Vestibular Research : Equilibrium & Orientation·Louise DevantierJens-Jacob MØlby Henriksen
Feb 16, 2018·The Laryngoscope·Jorge Rey-MartinezNicolas Perez-Fernandez
Jan 28, 2021·European Archives of Oto-rhino-laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery·Morten Klitskov Jensen, Dan Dupont Hougaard
Apr 6, 2021·Journal of Vestibular Research : Equilibrium & Orientation·Augusto Pietro CasaniElena Navari
Jan 7, 2022·Experimental Brain Research·Maxime MaheuRobert J Peterka

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Software Mentioned

vHIT
MATLAB
MATLAB scripts
SHIMP
SPSS SPSS Statistics for macOS
ICS
HITCal

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