A Comparison of the Latencies of Visually Induced Postural Change and Self-Motion Perception

This study compared the latencies of visually induced postural change and self-motion perception under identical visual conditions. The results showed that a visual roll stimulus elicits postural tilt in the direction of scene motion and an increase in postural instability several seconds before the subject begins to perceive illusory self-motion (vection) in the opposite direction. Postural and vection latencies correlate highly with one another, but bear little relationship with the magnitude of either sway or vection.

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Arthrokinetic Information Affects Linear Self-Motion Perception

Journal of Vestibular Research ◽

10.3233/ves-1995-5202 ◽

1995 ◽

Vol 5 (2) ◽

pp. 109-116

Author(s):

Willem Bles ◽

Monique Jelmorini ◽

Harold Bekkering ◽

Bernd de Graaf

Keyword(s):

Motion Perception ◽

Opposite Direction ◽

Frontoparallel Plane ◽

Vestibular Information ◽

The Subject ◽

Moving Platform ◽

Self Motion ◽

Predominant Effect

A sensation of linear self-motion can be induced in a blindfolded stationary sitting subject, who keeps contact with a linearly moving platform (acceleration 0.1 m/s2) in the frontoparallel plane by means of a hand-over-hand walking action. When discordant suprathreshold vestibular information from the otoliths is added by moving the subject laterally (acceleration 0.1 m/s2) in the same direction as the platform (acceleration of the platform 0.2 m/s2, so the arthrokinetic stimulus is also an acceleration of 0.1 m/s2, but into the opposite direction), the arthrokinetic information was found to have a predominant effect on the perceived direction of self-motion.

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Perceived self-motion in two visual contexts: Dissociable mechanisms underlie perception

Journal of Vestibular Research ◽

10.3233/ves-2006-161-202 ◽

2006 ◽

Vol 16 (1-2) ◽

pp. 23-28 ◽

Cited By ~ 6

Author(s):

W. Geoffrey Wright ◽

Paul DiZio ◽

James R. Lackner

Keyword(s):

Motion Perception ◽

Path Integration ◽

Visual Input ◽

Visual Scene ◽

Spatial Context ◽

Immersive Virtual Environment ◽

Physical Context ◽

The Subject ◽

Self Motion ◽

Visual Acceleration

We evaluated the influence of moving visual scenes and knowledge of spatial and physical context on visually induced self-motion perception in an immersive virtual environment. A sinusoidal, vertically oscillating visual stimulus induced perceptions of self-motion that matched changes in visual acceleration. Subjects reported peaks of perceived self-motion in synchrony with peaks of visual acceleration and opposite in direction to visual scene motion. Spatial context was manipulated by testing subjects in the environment that matched the room in the visual scene or by testing them in a separate chamber. Physical context was manipulated by testing the subject while seated in a stable, earth-fixed desk chair or in an apparatus capable of large linear motions, however, in both conditions no actual motion occurred. The compellingness of perceived self-motion was increased significantly when the spatial context matched the visual input and actual body displacement was possible, however, the latency and amplitude of perceived self-motion were unaffected by the spatial or physical context. We propose that two dissociable processes are involved in self-motion perception: one process, primarily driven by visual input, affects vection latency and path integration, the other process, receiving cognitive input, drives the compellingness of perceived self-motion.

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Color effects on self-motion perception

PsycEXTRA Dataset ◽

10.1037/e527352012-031 ◽

2006 ◽

Author(s):

Frederick Bonato ◽

Andrea Bubka

Keyword(s):

Motion Perception ◽

Self Motion

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Disruption of self-motion perception without vestibular reflex alteration in ménière’s disease

Journal of Vestibular Research ◽

10.3233/ves-201520 ◽

2021 ◽

pp. 1-11

Author(s):

Mario Faralli ◽

Michele Ori ◽

Giampietro Ricci ◽

Mauro Roscini ◽

Roberto Panichi ◽

...

Keyword(s):

Motion Perception ◽

Meniere’S Disease ◽

Menière’S Disease ◽

Whole Body ◽

Meniere's Disease ◽

Ménière’S Disease ◽

Menière's Disease ◽

Ocular Reflex ◽

Ménière's Disease ◽

Self Motion

BACKGROUND: Self-motion misperception has been observed in vestibular patients during asymmetric body oscillations. This misperception is correlated with the patient’s vestibular discomfort. OBJECTIVE: To investigate whether or not self-motion misperception persists in post-ictal patients with Ménière’s disease (MD). METHODS: Twenty-eight MD patients were investigated while in the post-ictal interval. Self-motion perception was studied by examining the displacement of a memorized visual target after sequences of opposite directed fast-slow asymmetric whole body rotations in the dark. The difference in target representation was analyzed and correlated with the Dizziness Handicap Inventory (DHI) score. The vestibulo-ocular reflex (VOR) and clinical tests for ocular reflex were also evaluated. RESULTS: All MD patients showed a noticeable difference in target representation after asymmetric rotation depending on the direction of the fast/slow rotations. This side difference suggests disruption of motion perception. The DHI score was correlated with the amount of motion misperception. In contrast, VOR and clinical trials were altered in only half of these patients. CONCLUSIONS: Asymmetric rotation reveals disruption of self-motion perception in MD patients during the post-ictal interval, even in the absence of ocular reflex impairment. Motion misperception may cause persistent vestibular discomfort in these patients.

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Sensorimotor impairment from a new analog of spaceflight-altered neurovestibular cues

Journal of Neurophysiology ◽

10.1152/jn.00156.2019 ◽

2020 ◽

Vol 123 (1) ◽

pp. 209-223

Author(s):

Jordan B. Dixon ◽

Torin K. Clark

Keyword(s):

Head Tilt ◽

Semicircular Canals ◽

Control Groups ◽

Head Restraint ◽

The Subject ◽

Sensorimotor Impairment ◽

Self Motion ◽

Future Work ◽

Extended Exposure ◽

Sensorimotor Performance

Exposure to microgravity during spaceflight causes central reinterpretations of orientation sensory cues in astronauts, leading to sensorimotor impairment upon return to Earth. Currently there is no ground-based analog for the neurovestibular system relevant to spaceflight. We propose such an analog, which we term the “wheelchair head-immobilization paradigm” (WHIP). Subjects lie on their side on a bed fixed to a modified electric wheelchair, with their head restrained by a custom facemask. WHIP prevents any head tilt relative to gravity, which normally produces coupled stimulation to the otoliths and semicircular canals, but does not occur in microgravity. Decoupled stimulation is produced through translation and rotation on the wheelchair by the subject using a joystick. Following 12 h of WHIP exposure, subjects systematically felt illusory sensations of self-motion when making head tilts and had significant decrements in balance and locomotion function using tasks similar to those assessed in astronauts postspaceflight. These effects were not observed in our control groups without head restraint, suggesting the altered neurovestibular stimulation patterns experienced in WHIP lead to relevant central reinterpretations. We conclude by discussing the findings in light of postspaceflight sensorimotor impairment, WHIP’s uses beyond a spaceflight analog, limitations, and future work. NEW & NOTEWORTHY We propose, implement, and demonstrate the feasibility of a new analog for spaceflight-altered neurovestibular stimulation. Following extended exposure to the analog, we found subjects reported illusory self-motion perception. Furthermore, they demonstrated decrements in balance and locomotion, using tasks similar to those used to assess astronaut sensorimotor performance postspaceflight.

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