Influence of Sensory Conflict on Perceived Timing of Passive Rotation in Virtual Reality

Chung, William; Barnett‐Cowan, Michael

doi:10.1163/22134808-bja10074

Cited by 5 publications

(4 citation statements)

References 34 publications

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“…Visual motion was a 10 degree angular rotation in the yaw axis in both left and right directions (Fig. 1a), with a peak velocity of 20 deg/s (Chung and Barnett-Cowan, 2022). A negative SOA indicates that the auditory stimuli was presented before the onset of visual motion, positive SOA indicates the auditory stimuli presented after the visual motion and zero indicates both stimuli occurring at the same time.…”

Section: Methods and Methodsmentioning

confidence: 99%

Off-Vertical Body Orientation Delays the Perceived Onset of Visual Motion

Chung

Barnett‐Cowan

2022

Preprint

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The integration of vestibular, visual and body cues is a fundamental process in the perception of self-motion and is commonly experienced in an upright posture. However, when the body is tilted in an off-vertical orientation these signals are no longer aligned relative to the influence of gravity. In this study, sensory conflict with the vestibular signal was introduced by manipulating the orientation of the body, generating a mismatch between body and vestibular cues due to gravity in the perception of upright and creating an ambiguous vestibular signal of either head tilt or translation. In a series of temporal-order judgment tasks, participants reported the perceived onset of a visual scene simulating rotation around the yaw axis presented in virtual reality with a paired auditory tone while in an upright, supine and side recumbent body positions. The results revealed that the perceived onset of visual motion was further delayed from zero (i.e., true simultaneity between visual onset and a reference auditory tone) by approximately an additional 30ms when viewed in a supine or side recumbent orientation compared to an upright posture. There were also no significant differences in the timing estimates of the visual motion between all the non-upright orientations. This indicates that the perceived timing of visual motion is negatively impacted by the presence of conflict in the vestibular and body signals due to the direction of gravity and body orientation, even when the mismatch is not in the direct plane of the axis of rotation.

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Section: Methods and Methodsmentioning

confidence: 99%

Off-Vertical Body Orientation Delays the Perceived Onset of Visual Motion

Chung

Barnett‐Cowan

2022

Preprint

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“…Cybersickness is also caused by a discrepancy between visual information in the virtual reality and vestibular and somatosensory information, various changes in visual information, and relatively little physical movement 7 . The sensory conflict theory explains that motion sickness and spatial disorientation can occur because of conflicts between sensory inputs related to spatial orientation and the perception of movement 8 , 9 . When there is a discrepancy or conflict between sensory inputs, the human brain recognizes it as a threat or an abnormal situation and induces symptoms such as dizziness and nausea as a protective response 8 , 9 .…”

Section: Introductionmentioning

confidence: 99%

“…The sensory conflict theory explains that motion sickness and spatial disorientation can occur because of conflicts between sensory inputs related to spatial orientation and the perception of movement 8 , 9 . When there is a discrepancy or conflict between sensory inputs, the human brain recognizes it as a threat or an abnormal situation and induces symptoms such as dizziness and nausea as a protective response 8 , 9 . These problems can be a challenge in the development of virtual reality technology, particularly in the application of virtual reality rehabilitation technology for patients with neurological diseases such as stroke.…”

Section: Introductionmentioning

confidence: 99%

Investigating cortical activity during cybersickness by fNIRS

Yeo,

Park,

Yun

2024

Sci Rep

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This study investigated brain responses during cybersickness in healthy adults using functional near-infrared spectroscopy (fNIRS). Thirty participants wore a head-mounted display and observed a virtual roller coaster scene that induced cybersickness. Cortical activation during the virtual roller coaster task was measured using fNIRS. Cybersickness symptoms were evaluated using a Simulator Sickness Questionnaire (SSQ) administered after the virtual rollercoaster. Pearson correlations were performed for cybersickness symptoms and the beta coefficients of hemodynamic responses. The group analysis of oxyhemoglobin (HbO) and total hemoglobin (HbT) levels revealed deactivation in the bilateral angular gyrus during cybersickness. In the Pearson correlation analyses, the HbO and HbT beta coefficients in the bilateral angular gyrus had a significant positive correlation with the total SSQ and disorientation. These results indicated that the angular gyrus was associated with cybersickness. These findings suggest that the hemodynamic response in the angular gyrus could be a biomarker for evaluating cybersickness symptoms.

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“…If the perception of visual motion is indeed influenced by the top-down mechanisms as previously discussed, we believe that this should not be limited to just the spatial aspects alone. Previous research has found that the perceived timing of passive selfmotion is delayed when the accompanying visual feedback is incongruent with the physical motion (Chung and Barnett-Cowan, 2022); however, it has yet to be examined how the timing of the visual motion is perceived with sensory conflict. In the current experiment, we investigated the perceived timing of visual motion during optic flow in the head-centred yaw rotation axis in the presence of sensory conflict by altering the orientation of the head and body.…”

Section: Introductionmentioning

confidence: 99%

Off-Vertical Body Orientation Delays the Perceived Onset of Visual Motion

Chung

Barnett‐Cowan

2023

Multisens. Res.

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The integration of vestibular, visual and body cues is a fundamental process in the perception of self-motion and is commonly experienced in an upright posture. However, when the body is tilted in an off-vertical orientation these signals are no longer aligned relative to the influence of gravity. In this study, the perceived timing of visual motion was examined in the presence of sensory conflict introduced by manipulating the orientation of the body, generating a mismatch between body and vestibular cues due to gravity and creating an ambiguous vestibular signal of either head tilt or translation. In a series of temporal-order judgment tasks, participants reported the perceived onset of a visual scene simulating rotation around the yaw axis presented in virtual reality with a paired auditory tone while in an upright, supine and side-recumbent body position. The results revealed that the perceived onset of visual motion was further delayed from zero (i.e., true simultaneity between visual onset and a reference auditory tone) by approximately an additional 30 ms when viewed in a supine or side-recumbent orientation compared to an upright posture. There were also no significant differences in the timing estimates of the visual motion between all the non-upright orientations. This indicates that the perceived timing of visual motion is negatively impacted by the presence of conflict in the vestibular and body signals due to the direction of gravity and body orientation, even when the mismatch is not in the direct plane of the axis of rotation.

show abstract

Influence of Sensory Conflict on Perceived Timing of Passive Rotation in Virtual Reality

Cited by 5 publications

References 34 publications

Off-Vertical Body Orientation Delays the Perceived Onset of Visual Motion

Off-Vertical Body Orientation Delays the Perceived Onset of Visual Motion

Investigating cortical activity during cybersickness by fNIRS

Off-Vertical Body Orientation Delays the Perceived Onset of Visual Motion

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