Vision Impairment Provides New Insight Into Self-Motion Perception

Luu, Wilson; Zangerl, Barbara; Kalloniatis, Michael; Palmisano, Stephen; Kim, Juno

doi:10.1167/iovs.62.2.4

Cited by 7 publications

(10 citation statements)

References 62 publications

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“…This difference may be attributed to the visual stimuli used, where their participants viewed a real-world stimulus projected on a large flat-panel display whereas we used an HMD with moving dots. As previously discussed, there are advantages of using an HMD over flat-panel displays 35 , 36 . Additionally, our HMD display was generated to surround and immerse the observer in VR to mimic realism within a three-dimensional space.…”

Section: Discussionmentioning

confidence: 98%

“…Keshavarz and colleagues 35 found that viewing stimuli within large dome-like displays or multiple displays arranged in a three-dimensional (3D) structure resulted in stronger experiences of vection compared with a single central display. A recent study also highlighted the role of the peripheral visual field in the experience of a three-dimensional viewing environment, which enhanced vection strength and spatial presence perception 36 . Our HMD VR is able to present visual stimuli to up to 110° in angular viewing range, a presentation that encompasses a wider field of visual stimulation compared to frontally viewed flat panel displays.…”

Section: Discussionmentioning

confidence: 99%

“…Displays simulating illusory self-motion in depth (vection) whilst facing forward (pure radial optic flow) were created using our custom software developed using Visual C++ and Microsoft Visual Studio 2010. Displays were generated similarly to our recent works 36 . This software utilised OpenGL and the Oculus Rift CV1 SDK.…”

Section: Methodsmentioning

confidence: 99%

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Effects of stereopsis on vection, presence and cybersickness in head-mounted display (HMD) virtual reality

Luu

Zangerl

Kalloniatis

et al. 2021

Sci Rep

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Stereopsis provides critical information for the spatial visual perception of object form and motion. We used virtual reality as a tool to understand the role of global stereopsis in the visual perception of self-motion and spatial presence using virtual environments experienced through head-mounted displays (HMDs). Participants viewed radially expanding optic flow simulating different speeds of self-motion in depth, which generated the illusion of self-motion in depth (i.e., linear vection). Displays were viewed with the head either stationary (passive radial flow) or laterally swaying to the beat of a metronome (active conditions). Multisensory conflict was imposed in active conditions by presenting displays that either: (i) compensated for head movement (active compensation condition), or (ii) presented pure radial flow with no compensation during head movement (active no compensation condition). In Experiment 1, impairing stereopsis by anisometropic suppression in healthy participants generated declines in reported vection strength, spatial presence and severity of cybersickness. In Experiment 2, vection and presence ratings were compared between participants with and without clinically-defined global stereopsis. Participants without global stereopsis generated impaired vection and presence similarly to those found in Experiment 1 by subjects with induced stereopsis impairment. We find that reducing global stereopsis can have benefits of reducing cybersickness, but has adverse effects on aspects of self-motion perception in HMD VR.

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

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Effects of stereopsis on vection, presence and cybersickness in head-mounted display (HMD) virtual reality

Luu

Zangerl

Kalloniatis

et al. 2021

Sci Rep

Self Cite

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“…To expand the scope of our findings, participants with visual declines/impairments could be included in future studies. In fact, previous studies involving individuals with age-related eye disease and visual impairment such as age-related macular degeneration (AMD) reported relatively higher vection intensity scores compared to healthy age-matched controls when motion in depth was simulated (Luu et al, 2021). These authors and others (Tarita-Nistor et al, 2008) have suggested that those with AMD may be more sensitive to their peripheral vision to compensate for deficits in their central visual field, and thus experience increased vection as a result.…”

Section: Discussionmentioning

confidence: 99%

Enhanced vection in older adults: Evidence for age-related effects in multisensory vection experiences

et al. 2022

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The illusion of self-motion (vection) is a multisensory phenomenon elicited by visual, auditory, tactile, or other sensory cues. Aging is often associated with changes in sensory acuity, visual motion perception, and multisensory integration, processes which may influence vection perception. However, age-related differences in vection have received little study to date. Thus, the objective of the present study was to investigate age-related differences in vection during multisensory stimulation. Nineteen younger adults and 19 older adults were exposed to rotating visual, auditory, and tactile stimuli (separately or in combination) at a speed of 45°/s inside a VR laboratory inducing circular vection. The size of the field-of-view (FOV) was large (240°), medium (75°), small (30°), or contained no visuals. Vection intensity and duration were reported verbally after each trial. Overall, older adults experienced significantly stronger and longer vection compared to younger adults. Additionally, there were main effects of FOV and sensory cues, such that larger FOVs and the presence of auditory and tactile stimulation increased vection ratings for both age groups. These findings support the idea that vection is a multisensory experience that can be elicited by visual, auditory, and tactile stimuli and demonstrates these effects for the first time in older adults.

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“…It is a common side effect in healthy individuals using an HMD and is typically less severe and of lower incidence than motion sickness. 71 Preliminary data from 50 IrisVision users with low vision suggest that SS symptoms are unrelated to the measured phoria of the user. 70 Two investigations (Table 3) used the Simulator Sickness Questionnaire (SSQ) 85 as a tool to evaluate SS with the fully immersive IrisVision 52 and the semi-immersive eSight devices.…”

Section: Adverse Effects and Sicknessmentioning

confidence: 99%

Are wearable electronic vision enhancement systems (wEVES) beneficial for people with age‐related macular degeneration? A scoping review

Miller

Crossland

Macnaughton

et al. 2023

Ophthalmic Physiologic Optic

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Introduction: Age-related macular degeneration (AMD) is the most common cause of irreversible visual impairment in the United Kingdom. It has a wideranging detrimental impact on daily living, including impairment of functional ability and quality of life. Assistive technology designed to overcome this impairment includes wearable electronic vision enhancement systems (wEVES). This scoping review assesses the usefulness of these systems for people with AMD. Methods: Four databases (Cumulative Index to Nursing and Allied Health Literature, PubMed, Web of Science and Cochrane CENTRAL) were searched to identify papers that investigated image enhancement with a head-mounted electronic device on a sample population that included people with AMD. Results: Thirty-two papers were included: 18 studied the clinical and functional benefits of wEVES, 11 investigated use and usability and 3 discussed sickness and adverse effects. Conclusions: Wearable electronic vision enhancement systems provide handsfree magnification and image enhancement producing significant improvements in acuity, contrast sensitivity and aspects of laboratory-simulated daily activity. Adverse effects were infrequent, minor and spontaneously resolved with the removal of the device. However, when symptoms arose, they sometimes persisted with continued device usage. There are multi-factorial influences and a diversity of user opinions on promotors to successful device use. These factors are not exclusively driven by visual improvement and incorporate other issues including device weight, ease of use and inconspicuous design. There is insufficient evidence of any cost-benefit analysis for wEVES. However, it has been shown that a user's decision to make a purchase evolves over time, with their estimates of cost falling below the retail price of the devices. Additional research is needed to understand the specific and distinct benefits of wEVES for people with AMD. Further patient-centred research should assess the benefits of wEVES in user-led activities when directly compared with alternative coping strategies, allowing professionals and users to make better prescribing and purchasing decisions. K E Y W O R D Sage-related macular degeneration, head-mounted display, image enhancement, low-vision aid, visually impaired persons, wearable devices, wearable electronic vision enhancement systems

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Vision Impairment Provides New Insight Into Self-Motion Perception

Cited by 7 publications

References 62 publications

Effects of stereopsis on vection, presence and cybersickness in head-mounted display (HMD) virtual reality

Effects of stereopsis on vection, presence and cybersickness in head-mounted display (HMD) virtual reality

Enhanced vection in older adults: Evidence for age-related effects in multisensory vection experiences

Are wearable electronic vision enhancement systems (wEVES) beneficial for people with age‐related macular degeneration? A scoping review

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