Postural sway in men and women during nauseogenic motion of the illuminated environment

Koslucher, Frank; Munafo, Justin; Stoffregen, Thomas A.

doi:10.1007/s00221-016-4675-8

Cited by 46 publications

(35 citation statements)

References 51 publications

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“…Hence, what would have upset task performance became a resource for exploring the task space for the eventuality of a major loss of sensory information. And now, we see that a less multifractal postural system can be more stable (e.g., smaller t MF in [42]; and smaller W MF in [38,39]) and, as present findings indicate, more accurate in how it orients behaviors to a visually-guided aiming task.…”

Section: The Value Of Multifractal Fluctuation Is Specific To Task Cosupporting

confidence: 71%

Multifractality in postural sway supports quiet eye training in aiming tasks: A study of golf putting

Jacobson¹,

Berleman-Paul²,

Mangalam

et al. 2020

Preprint

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The 'quiet eye' (QE) approach to visually-guided aiming behavior invests fully in perceptual information's potential to organize coordinated action. Sports psychologists refer to QE as the stillness of the eyes during aiming tasks and increasingly into self- and externally-paced tasks. Amidst the 'noisy' fluctuations of the athlete's body, quiet eyes might leave fewer saccadic interruptions to the coupling between postural sway and optic flow. Multifractality in postural sway is a robust predictor of both visual and haptic perceptual responses. Postural sway generates optic flow centered on an individual's eye height. So, we manipulated the eye height part way through a golf-putting task for participants trained in QE or trained technically as per conventional golf putting. We predicted that perturbing the eye height by attaching wooden blocks below the feet would perturb the putting more so in QE-trained participants than in those trained technically. We also predicted that responses to this perturbation would depend on multifractality in postural sway. Specifically, we predicted that less multifractality would predict more adaptive responses to the perturbation and higher putting accuracy. Results supported both predictions. QE training and lower multifractality led to more frequent successful putts, and the perturbation of eye height led to less frequent successful putts, particularly for QE-trained participants. Models of radial error (i.e., the distance between the ball's final position and the hole) indicated that lower estimates of multifractality due to nonlinearity coincided with a more adaptive response to the perturbation. These results challenge the past suggestions that reduced multifractality might be a signature of diseased posture. Instead, they suggest that reduced multifractality may act in a context-sensitive manner to restrain motoric degrees of freedom to achieve the task goal.

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Section: The Value Of Multifractal Fluctuation Is Specific To Task Cosupporting

confidence: 71%

Multifractality in postural sway supports quiet eye training in aiming tasks: A study of golf putting

Jacobson¹,

Berleman-Paul²,

Mangalam

et al. 2020

Preprint

View full text Add to dashboard Cite

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“…Note that in our study there were few females compared to males. From past research, it is known that females are generally more prone to sickness (e.g., Koslucher, Munafo, & Stoffregen, 2016), therefore gender could be an issue in the interpretation of our results. However, in future work, we want to consider having a navigation system with close-loop feedback, namely looping real-time behavioral measurements with navigation control laws so that the navigation system automatically adapts to the level of sickness of the user.…”

Section: Discussionmentioning

confidence: 87%

Features of the Postural Sway Signal as Indicators to Estimate and Predict Visually Induced Motion Sickness in Virtual Reality

Chardonnet

Mirzaei

Merienne

2017

International Journal of Human–Computer Interaction

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International audienceNavigation in a 3D immersive virtual environment is known to be prone to visually induced motion sickness (VIMS). Several psychophysiological and behavioral methods have been used to measure the level of sickness of a user, among which is postural instability. This study investigates all the features that can be extracted from the body postural sway: area of the projection of the center of gravity (mainly considered in past studies) and its shape and the frequency components of the signal's spectrum, in order to estimate and predict the occurrence of sickness in a typical virtual reality (VR) application. After modeling and simulation of the body postural sway, an experiment on 17 subjects identified a relation between the level of sickness and the variation both in the time and frequency domains of the body sway signal. The results support and go further into detail of findings of past studies using postural instability as an efficient indicator of sickness, giving insight to better monitor VIMS in a VR application

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“…Palatinus et al [33] found that the multifratality of torso movement varied as a function of “perceptual intent”, that is, whether participants were attempting to detect the whole length or the partial length of an unseen rod that was attached to their shoulders. Finally, Koslucher et al [53] found, in young adults, that the multifractality of standing body sway differed between participants who proved to be susceptible to visually induced motion sickness and those who did not become sick. Much additional research will be required to identify reliable links between patterns of multifracality in human movement and particular states, situations, conditions, or diagnoses of the individuals involved.…”

Section: Discussionmentioning

confidence: 99%

The Rim and the Ancient Mariner: The Nautical Horizon Affects Postural Sway in Older Adults

Munafo¹,

Wade²,

Stergiou³

et al. 2016

PLoS ONE

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On land, the spatial magnitude of postural sway (i.e., the amount of sway) tends to be greater when participants look at the horizon than when they look at nearby targets. By contrast, on ships at sea, the spatial magnitude of postural sway in young adults has been greater when looking at nearby targets and less when looking at the horizon. Healthy aging is associated with changes in the movement patterns of the standing body sway, and these changes typically are interpreted in terms of age-related declines in the ability to control posture. To further elucidate the mechanisms associated with these changes we investigated control of posture in a setting that poses substantial postural challenges; standing on a ship at sea. In particular, we explored postural sway on a ship at sea when older adults looked at the horizon or at nearby targets. We evaluated the kinematics of the center of pressure in terms of spatial magnitude (i.e., the amount of sway) and multifractality (a measure of temporal dynamics). We found that looking at the horizon significantly affected the multifractality of standing body, but did not systematically influence the spatial magnitude of sway. We discuss the results in terms of age-related changes in the perception and control of dynamic body orientation.

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Postural sway in men and women during nauseogenic motion of the illuminated environment

Cited by 46 publications

References 51 publications

Multifractality in postural sway supports quiet eye training in aiming tasks: A study of golf putting

Multifractality in postural sway supports quiet eye training in aiming tasks: A study of golf putting

Features of the Postural Sway Signal as Indicators to Estimate and Predict Visually Induced Motion Sickness in Virtual Reality

The Rim and the Ancient Mariner: The Nautical Horizon Affects Postural Sway in Older Adults

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