Modelling motion sickness and subjective vertical mismatch detailed for vertical motions

Bos, Jelte E.; Bles, W.

doi:10.1016/s0361-9230(98)00088-4

Cited by 162 publications

(110 citation statements)

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“…Fit through observed MSI-data of over 500 subjects by McCauley et al (1976) versus frequency (f) and RMS acceleration amplitude (A RMS ). Right: Predicted data by Bos and Bles (1998). Both curves show an increase of sickness incidence with increasing amplitude, and both also exhibit a peak around 0.16 Hz Intermezzo: Motion sickness.…”

Section: Internal Models: Howmentioning

confidence: 98%

“…Furthermore, this model does not describe motion sickness characteristics as they are observed, because no explicit low-pass ®lter was applied in both aerent paths as explained above. Bles (1998), Bles et al (1998) and Bos and Bles (1998) adapted this model as follows. We ®rst noted that people only get sick if: (a) they do have a functioning vestibular apparatus, (b) gravity changes relative to their body/head and (c) they anticipate this gravity component incorrectly.…”

Section: Internal Models: Howmentioning

confidence: 99%

“…Due to the long time constant of this ®lter (l 12 min typically, cf. Bos and Bles, 1998), this integrator averages out short temporal¯uctuations and only aects the ®nal output amplitude, independent of input frequencies 10 : Then the output can be calculated using, for example, a sinusoidal vertical motion such as those used by McCauley et al (1976). Figure 14 shows both the original description of McCauley et al (based on observed data) and our model predictions.…”

Section: Internal Models: Howmentioning

confidence: 99%

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Theoretical considerations on canal-otolith interaction and an observer model

Bos¹,

Bles²

2002

Biological Cybernetics

156

113

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Subjective vertical orientation, eye and body movements, and motion sickness all depend on the way our central nervous system deals with the gravito-inertial force resolution problem: how to discern accelerations due to motion from those due to gravity, despite these accelerations being physically indistinguishable. To control body or eye movements, the accelerations due to motion should be known explicitly. Hence, somehow gravity should be filtered out of the specific force or gravito-inertial acceleration (GIA, the sum of both accelerations) as sensed by the otoliths, which are the linear accelerometers in the inner ear. As the GIA also changes in a head-fixed frame of reference when the head is rotated, angular motion as sensed by the semicircular canals in the inner ear should also be considered. We present here a theoretical approach to this problem, and show that the mathematical description of canal-otolith interaction is in fact a three-dimensional equivalent of the two-dimensional description given by Mayne in 1974. A simple low-pass filter is used to divide the GIA into a motion and a gravity component. The retardation of the somatogravic effect by concomitant angular motion during centrifugation is shown as a result. Furthermore we show how the canal-otolith interaction fits within the framework of an observer model to describe subjective vertical orientation, eye movement and motion sickness characteristics. To predict a frequency peak in sickness severity, for example, it is necessary to explicitly include the Mayne equation operating both on sensor afferents and in the internal model. From tilt and translation data from centrifugation and horizontal oscillation, as well as from motion sickness data, we conclude that the time constant of the low-pass filter is in the order of seconds instead of tens of seconds as assumed before. Several corollaries are additionally discussed as a result.

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Section: Internal Models: Howmentioning

confidence: 98%

Section: Internal Models: Howmentioning

confidence: 99%

Section: Internal Models: Howmentioning

confidence: 99%

See 1 more Smart Citation

Theoretical considerations on canal-otolith interaction and an observer model

Bos¹,

Bles²

2002

Biological Cybernetics

156

113

View full text Add to dashboard Cite

show abstract

“…Motion sickness due to mild motion may also go unnoticed initially, but can accumulate giving rise ocular, disorienting, and vertiginous and/or nauseating effects [46,73], showing a certain overlap with the disorienting symptoms associated with MD. Moreover, the most popular theory on motion sickness by Reason & Brand [73] has been further elaborated to include equal assumptions about efference copies and afferent signals as applied by Sugie [7,8,9,11,63,89]. Note that the discomforting conflict in Ménière does not require actual, or more specifically exogenous body motion.…”

Section: The Therapeutic Effect Of Wabipsmentioning

confidence: 99%

Treatment of vestibular disorders with weak asymmetric base-in prisms: An hypothesis with a focus on Ménière’s disease

Bos

Lubeck

Vente³

2018

VES

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Abstract.BACKGROUND: Regular treatments of Ménière's disease (MD) vary largely, and no single satisfactory treatment exists. A complementary treatment popular among Dutch and Belgian patients involves eyeglasses with weak asymmetric base-in prisms, with a perceived high success rate. An explanatory mechanism is, however, lacking. OBJECTIVE: To speculate on a working mechanism explaining an effectiveness of weak asymmetric base-in prims in MD, based on available knowledge. METHODS: After describing the way these prisms are prescribed using a walking test and its effect reported on, we give an explanation of its underlying mechanism, based on the literature. RESULTS: The presumed effect can be explained by considering the typical star-like walking pattern in MD, induced by a drifting after-image comparable to the oculogyral illusion. Weak asymmetric base-in prisms can furthermore eliminate the conflict between a net vestibular angular velocity bias in the efferent signal controlling the VOR, and a net re-afferent ocular signal. CONCLUSIONS: The positive findings with these glasses reported on, the fact that the treatment itself is simple, low-cost, and socially acceptable, and the fact that an explanation is at hand, speak in favour of elaborating further on this treatment.

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“…The key nauseogenic motion component is thought to be variation in the direction and magnitude of the gravito-inertial force vector (GIF) which is usually the addition of the force of gravity and the imposed acceleration due to vehicle motion [2]. For human subjects, maximum susceptibility is observed in a frequency range around 0.2 to 0.3Hz.…”

Section: Introductionmentioning

confidence: 99%

Biodynamic Hypothesis for the Frequency Tuning of Motion Sickness

Golding

Gresty²

2016

Aerospace Medicine and Human Performance

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INTRODUCTION Motion sickness is often provoked by oscillatory translational (linear) acceleration. For humans, motion frequencies around 0.2-0.3Hz are the most provocative. A current explanation for this frequency band is that it spans a region of maximum ambiguity concerning the interpretation of vestibular signals. Below 0.2-0.3Hz linear accelerations are interpreted as 'tilt' whereas at higher frequencies accelerations are interpreted as 'translation', i.e., linear motion through space. This is termed the 'tilt-translation' hypothesis. However the origin of this particular frequency range is unclear. We investigated whether the differential perceptions of oscillations at different frequencies derives from the biodynamics of active self-initiated whole body motion. METHODS Video-films were taken of subjects running slaloms of various combinations of lengths/amplitudes to provoke a range of temporal frequencies of slalom (reciprocal of time to run a cycle). RESULTS The usual tactic for cornering at frequencies <0.25Hz was whole-body tilt whereas >0.4Hz lateropulsion of the legs with torso erect was observed. Between these frequencies subjects showed variable tactics, mixing components of both tilt and lateropulsion. CONCLUSIONS This uncertainty in selecting the appropriate tactic for movement control around 0.2-0.3Hz is the possible origin of 'tilt-translation' ambiguity. It also follows that externally imposed motion around these frequencies would challenge both perception and motor control; with the consequence of motion sickness.

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Modelling motion sickness and subjective vertical mismatch detailed for vertical motions

Cited by 162 publications

References 5 publications

Theoretical considerations on canal-otolith interaction and an observer model

Theoretical considerations on canal-otolith interaction and an observer model

Treatment of vestibular disorders with weak asymmetric base-in prisms: An hypothesis with a focus on Ménière’s disease

Biodynamic Hypothesis for the Frequency Tuning of Motion Sickness

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