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Scientific article
Open access
English

Reported thresholds of self-motion perception are influenced by testing paradigm

Published inJournal of neurology, vol. 269, no. 11, p. 5755-5761
Publication date2022-11
First online date2022-03-16
Abstract

Background/objective: Different testing paradigms have been proposed to investigate perceptual self-motion thresholds. They can differ regarding the amount of possible motions that patients have to choose from. Objective of this study was to compare the two-option paradigm and twelve-option paradigm, to investigate whether reducing the choice options significantly influences the reported thresholds of self-motion perception of healthy subjects.

Methods: Thirty-three volunteers with no prior vestibular complaints were included and sequentially tested with both paradigms at a random sequence. Perceptual self-motion thresholds were measured using a hydraulic motion platform in the absence of external visual and auditory cues. The platform delivered twelve different movements: six translations and six rotations. Each subject had to report the correct type and direction of movements. Thresholds were determined by a double confirmation of the lowest threshold, in combination with a double rejection of the one-step lower stimulus. Perceptual self-motion thresholds of both paradigms were compared using the mixed model analysis.

Results: The twelve-option paradigm showed significantly higher reported thresholds for yaw rotations and translations left, right and down (p < 0.001), compared to the two-option paradigm. No statistical difference was found for rolls and translations up. No significant gender effect, learning effect and carry-over effect were present in any of the applied motion directions.

Conclusion: Reported thresholds of self-motion perception of healthy subjects are influenced by the testing paradigm. The twelve-option paradigm showed significantly higher thresholds than the two-option paradigm. Results obtained with each testing paradigm should, therefore, be compared to paradigm-specific normative data.

eng
Keywords
  • Motion perception
  • Self-motion thresholds
  • Twelve-option paradigm
  • Two-option paradigm
  • Cues
  • Humans
  • Motion
  • Motion Perception
  • Sensory Thresholds
  • Vestibule, Labyrinth
  • Visual Perception
Citation (ISO format)
PLESHKOV, M. et al. Reported thresholds of self-motion perception are influenced by testing paradigm. In: Journal of neurology, 2022, vol. 269, n° 11, p. 5755–5761. doi: 10.1007/s00415-022-11032-y
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ISSN of the journal0340-5354
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