Room Tilt Illusion

Tiliket, Caroline; Ventre-Dominey, Jocelyne; Vighetto, Alain; Grochowicki, M

doi:10.1001/archneur.1996.00550120071018

Cited by 57 publications

(13 citation statements)

References 26 publications

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“…, 2013 ). Our results extend these observations on visuo-vestibular processing to BSC, showing that the experienced direction of 1PP depends on visual information about gravity, resembling altered own-body and verticality perception during room-tilt illusions in microgravity ( Tiliket et al. , 1996 ; Lopez et al.…”

Section: Discussionsupporting

confidence: 85%

“…, 2004 ; Blanke, 2012 ; Pfeiffer et al. , 2013 ) and based on earlier work showing contribution of contextual visual information to the brain’s estimate of the subjective vertical, or upright, direction ( Tiliket et al. , 1996 ; McIntyre et al.…”

Section: Methodsmentioning

confidence: 99%

“…in the absence of gravity during parabolic or space flights, astronauts may perceive a subjective vertical, or upright, direction aligned with the visual layout of the spacecraft, which may suddenly change orientation in steps of 90° or 180° angles [i.e. room-tilt illusion ( Tiliket et al. , 1996 )].…”

Section: Introductionmentioning

confidence: 99%

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Visual gravity contributes to subjective first-person perspective

Pfeiffer

Grivaz

Herbelin

et al. 2016

Neuroscience of Consciousness

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A fundamental component of conscious experience involves a first-person perspective (1PP), characterized by the experience of being a subject and of being directed at the world. Extending earlier work on multisensory perceptual mechanisms of 1PP, we here asked whether the experienced direction of the 1PP (i.e. the spatial direction of subjective experience of the world) depends on visual-tactile-vestibular conflicts, including the direction of gravity. Sixteen healthy subjects in supine position received visuo-tactile synchronous or asynchronous stroking to induce a full-body illusion. In the critical manipulation, we presented gravitational visual object motion directed toward or away from the participant’s body and thus congruent or incongruent with respect to the direction of vestibular and somatosensory gravitational cues. The results showed that multisensory gravitational conflict induced within-subject changes of the experienced direction of the 1PP that depended on the direction of visual gravitational cues. Participants experienced more often a downward direction of their 1PP (incongruent with respect to the participant’s physical body posture) when visual object motion was directed away rather than towards the participant’s body. These downward-directed 1PP experiences positively correlated with measures of elevated self-location. Together, these results show that visual gravitational cues contribute to the experienced direction of the 1PP, defining the subjective location and perspective from where humans experience to perceive the world.

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Section: Discussionsupporting

confidence: 85%

Section: Methodsmentioning

confidence: 99%

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Visual gravity contributes to subjective first-person perspective

Pfeiffer

Grivaz

Herbelin

et al. 2016

Neuroscience of Consciousness

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“…Transient upside-down inversion of vision—the room tilt illusion—has been repeatedly described in patients with lower brainstem infarctions (Ropper, 1983; Tiliket et al, 1996; Sierra-Hidalgo et al, 2012) or with cortical lesions (Solms et al, 1988), especially in cases of vestibular epilepsy (Smith, 1960). These illusions last for seconds or minutes, rarely up to hours.…”

Section: Room Tilt Illusionmentioning

confidence: 99%

Towards a concept of disorders of â€œhigher vestibular functionâ€

Brandt

Strupp

Dieterich

2014

Front. Integr. Neurosci.

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Background: Vestibular disorders are commonly characterized by a combination of perceptual, ocular motor, postural, and vegetative manifestations, which cause the symptoms of vertigo, nystagmus, ataxia, and nausea. Multisensory convergence and numerous polysynaptic pathways link the bilaterally organized central vestibular network with limbic, hippocampal, cerebellar, and non-vestibular cortex structures to mediate “higher” cognitive functions.Anatomical classification of vestibular disorders: The traditional classification of vestibular disorders is based on the anatomical site of the lesion. While it distinguishes between the peripheral and the central vestibular systems, certain weaknesses become apparent when applied clinically. There are two reasons for this: first, peripheral and central vestibular disorders cannot always be separated by the clinical syndrome; second, a third category, namely disorders of “higher vestibular function”, is missing. These disorders may be caused by peripheral as well as central vestibular lesions.Functional classification: Here we discuss a new concept of disorders of higher vestibular function which involve cognition and more than one sensory modality. Three conditions are described that exemplify such higher disorders: room tilt illusion, spatial hemineglect, and bilateral vestibulopathy all of which present with deficits of orientation and spatial memory.Conclusions: Further elaboration of such disorders of higher multisensory functions with respect to lesion site and symptomatology is desirable. The room tilt illusion and spatial hemineglect involve vestibular and visual function to the extent that both conditions can be classified as either disorders of higher vestibular or of higher visual functions. A possible way of separating these disorders in a first step is to determine whether the causative lesion site affects the vestibular or the visual system. For the vestibular system this lesion site may be peripheral or central. The criterion of “higher function” is fulfilled if cognition or senses other than the primarily affected one come into play.

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“…Neurological patients may experience episodes in which the visual surroundings suddenly appear tilted through 908 or 1808 (Steiner et al 1987;Tiliket et al 1996). In several cases, patients feel as if their bodies are dangling in space.…”

Section: Gravity Frame Of Referencementioning

confidence: 99%

Visually Induced Reorientation Illusions

Howard

2001

Perception

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It is known that rotation of a furnished room around the roll axis of erect subjects produces an illusion of 360 degrees self-rotation in many subjects. Exposure of erect subjects to stationary tilted visual frames or rooms produces only up to 20 degrees of illusory tilt. But, in studies using static tilted rooms, subjects remained erect and the body axis was not aligned with the room. We have revealed a new class of disorientation illusions that occur in many subjects when placed in a 90 degrees or 180 degrees tilted room containing polarised objects (familiar objects with tops and bottoms). For example, supine subjects looking up at a wall of the room feel upright in an upright room and their arms feel weightless when held out from the body. We call this the levitation illusion. We measured the incidence of 90 degrees or 180 degrees reorientation illusions in erect, supine, recumbent, and inverted subjects in a room tilted 90 degrees or 180 degrees. We report that reorientation illusions depend on the displacement of the visual scene rather than of the body. However, illusions are most likely to occur when the visual and body axes are congruent. When the axes are congruent, illusions are least likely to occur when subjects are prone rather than supine, recumbent, or inverted.

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Room Tilt Illusion

Cited by 57 publications

References 26 publications

Visual gravity contributes to subjective first-person perspective

Visual gravity contributes to subjective first-person perspective

Towards a concept of disorders of â€œhigher vestibular functionâ€

Visually Induced Reorientation Illusions

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Room Tilt Illusion

Cited by 57 publications

References 26 publications

Visual gravity contributes to subjective first-person perspective

Visual gravity contributes to subjective first-person perspective

Towards a concept of disorders of â€œhigher vestibular functionâ€

Visually Induced Reorientation Illusions

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Product

Resources

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Towards a concept of disorders of â€œhigher vestibular functionâ€