PlatformCommander — An open source software for an easy integration of motion platforms in research laboratories

Ertl, Matthias; Prelz, Carlo; Fitze, Daniel C.; Wyssen, Gerda; Mast, Fred W.

doi:10.1016/j.softx.2021.100945

Cited by 3 publications

(2 citation statements)

References 24 publications

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“…The participants' responses were recorded by means of button presses on a game controller (Logitech G F310, Switzerland). The motion platform was controlled by Platform-Commander (Ertl, Prelz, Fitze, Wyssen, & Mast, 2022) an open source software for interfacing motion platforms. Roll tilt with the rotation axis at the level of the participant's hips or translation along the inter-aural axis were used.…”

Section: Vestibular Stimulationmentioning

confidence: 99%

Vestibular perceptual learning improves self-motion perception, posture, and gait in older adults

Fitze,

Ertl,

Radlinger

et al. 2024

Preprint

Self Cite

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Vestibular motion perception declines with age, increasing the risk of falling substantially. We performed a two-week perceptual learning intervention using a self-motion direction discrimination task (2800 training trials per person) on a 6DOF motion platform in healthy older adults (n=40, aged 70-88yr). Linear inter-aural and angular roll tilt vestibular thresholds improved with training (95\% credible interval for pre/post difference), suggesting altered sensitivity post-training. Moreover, improved perceptual abilities transfer to actual posture (reduced sway) and gait parameters. Passive self-motion discrimination training provides a new and promising way to counteract age-related sensory decline. It can reduce the risk of falling, and thereby maintain individual autonomy and quality of life.

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Section: Vestibular Stimulationmentioning

confidence: 99%

Vestibular perceptual learning improves self-motion perception, posture, and gait in older adults

Fitze,

Ertl,

Radlinger

et al. 2024

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…In order to engage all vestibular sensors together or selectively, one must be able to move the person passively in all six degrees of freedom (DOF), by either translating linearly or rotating axially the head in 3-dimensional space. Stewart platforms are typically used for this purpose, since they generate these 6 DOFs movements with high temporal and spatial precision (e.g., Grabherr et al, 2008 ; MacNeilage et al, 2010 ; Crane, 2013 ; Ertl et al, 2022 ; La Scaleia et al, 2023 ). A Stewart platform consists of two rigid bodies (referred to as the base frame and the flying frame) connected through six extensible legs, each with spherical joints at both ends or with a spherical joint at one end and a universal joint at the other.…”

Section: Introductionmentioning

confidence: 99%

Head-centric computing for vestibular stimulation under head-free conditions

La Scaleia,

Brunetti,

Lacquaniti

et al. 2023

Front. Bioeng. Biotechnol.

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Background: The vestibular end organs (semicircular canals, saccule and utricle) monitor head orientation and motion. Vestibular stimulation by means of controlled translations, rotations or tilts of the head represents a routine manoeuvre to test the vestibular apparatus in a laboratory or clinical setting. In diagnostics, it is used to assess oculomotor postural or perceptual responses, whose abnormalities can reveal subclinical vestibular dysfunctions due to pathology, aging or drugs.Objective: The assessment of the vestibular function requires the alignment of the motion stimuli as close as possible with reference axes of the head, for instance the cardinal axes naso-occipital, interaural, cranio-caudal. This is often achieved by using a head restraint, such as a helmet or strap holding the head tightly in a predefined posture that guarantees the alignment described above. However, such restraints may be quite uncomfortable, especially for elderly or claustrophobic patients. Moreover, it might be desirable to test the vestibular function under the more natural conditions in which the head is free to move, as when subjects are tracking a visual target or they are standing erect on the moving platform. Here, we document algorithms that allow delivering motion stimuli aligned with head-fixed axes under head-free conditions.Methods: We implemented and validated these algorithms using a MOOG-6DOF motion platform in two different conditions. 1) The participant kept the head in a resting, fully unrestrained posture, while inter-aural, naso-occipital or cranio-caudal translations were applied. 2) The participant moved the head continuously while a naso-occipital translation was applied. Head and platform motion were monitored in real-time using Vicon.Results: The results for both conditions showed excellent agreement between the theoretical spatio-temporal profile of the motion stimuli and the corresponding profile of actual motion as measured in real-time.Conclusion: We propose our approach as a safe, non-intrusive method to test the vestibular system under the natural head-free conditions required by the experiential perspective of the patients.

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Human vestibular perceptual thresholds — A systematic review of passive motion perception

Fitze,

Mast,

Ertl

2024

Gait & Posture

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PlatformCommander — An open source software for an easy integration of motion platforms in research laboratories

Cited by 3 publications

References 24 publications

Vestibular perceptual learning improves self-motion perception, posture, and gait in older adults

Vestibular perceptual learning improves self-motion perception, posture, and gait in older adults

Head-centric computing for vestibular stimulation under head-free conditions

Human vestibular perceptual thresholds — A systematic review of passive motion perception

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