Vection Is Enhanced by Increased Exposure to Optic Flow

Seno, Takeharu; Murata, Kayoko; Fujii, Yoshitaka; Kanaya, Hidetoshi; Ogawa, Masaki; Kousuke, Tokunaga; Palmisano, Stephen

doi:10.1177/2041669518774069

Cited by 21 publications

(19 citation statements)

References 19 publications

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“…Thus, if participants perceived that they were moving about half as much as natural self-motion, they would rate vection strength as “50.” They were allowed to choose a rating greater than 100 if necessary, but none of them did so. This method is the same as we have used in several studies (Fujii, Seno, & Allison, 2018; Seno et al., 2010, 2017, 2018; Seno, Palmisano, Riecke, & Nakamura, 2015) and has been confirmed to be valid for evaluating vection strength.…”

Section: Methodsmentioning

confidence: 92%

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The Effect of Optical Flow Motion Direction on Vection Strength

Fujii

Seno

2020

i-Perception

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In some phenomena of visual perception, the motion direction of visual stimuli can affect perception. In particular, asymmetries between oblique directions and cardinal (horizontal and vertical) directions have been reported and are known as oblique effects (e.g., contrast sensitivity and motion threshold). In this study, we investigated how vection strength depends on motion direction. Participants observed random-dot optical flow in a circular field and rated the perceived vection strength. Dot movement was systematically controlled using the following angles: 0 (up), 30 , 45 , 60 , 90 , 120 , 135 , 150 , and 180 (down). We found that vection strength depended on motion direction and was weaker in the oblique directions than cardinal directions. Thus, the effect of motion direction on vection strength was variable, as seen in the shape of the oblique effect.

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Section: Methodsmentioning

confidence: 92%

“…They were allowed to choose a rating greater than 100 if necessary, but none of them did so. This method is the same as we have used in several studies (Fujii, Seno, & Allison, 2018;Seno et al, 2010Seno et al, , 2017Seno et al, , 2018; Seno, Figure 1. The stimulus used in Experiment 1 and Experiment 2.…”

Section: Experimental Methodsmentioning

confidence: 99%

The Effect of Optical Flow Motion Direction on Vection Strength

Fujii

Seno

2020

i-Perception

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“…In our set‐up, vection was elicited with relatively short stimulus duration of 5 s, whilst many previous experiments have employed longer durations e.g. 10 s and have found that vection becomes stronger with exposure duration (Palmisano & Riecke, ; Seno et al., ). The short vection onset latency may be due to the particular stimulus motion characteristics or the fact that participants were standing.…”

Section: Discussionmentioning

confidence: 99%

Shift in lateralization during illusory self‐motion: EEG responses to visual flicker at 10 Hz and frequency‐specific modulation by tACS

Dowsett

Herrmann

Dieterich

et al. 2019

Eur J of Neuroscience

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Self-motion perception is a key aspect of higher vestibular processing, suggested to rely upon hemispheric lateralization and alpha-band oscillations. The first aim of this study was to test for any lateralization in the EEG alpha band during the illusory sense of self-movement (vection) induced by large optic flow stimuli. Visual stimuli flickered at alpha frequency (approx. 10 Hz) in order to produce steady state visually evoked potentials (SSVEPs), a robust EEG measure which allows probing the frequency-specific response of the cortex. The first main result was that differential lateralization of the alpha SSVEP response was found during vection compared with a matched random motion control condition, supporting the idea of lateralization of visual-vestibular function. Additionally, this effect was frequency-specific, not evident with lower frequency SSVEPs. The second aim of this study was to test for a causal role of the right hemisphere in producing this lateralization effect and to explore the possibility of selectively modulating the SSVEP response. Transcranial alternating current stimulation (tACS) was applied over the right hemisphere simultaneously with SSVEP recording, using a novel artefact removal strategy for combined tACS-EEG. The second main result was that tACS enhanced SSVEP amplitudes, and the effect of tACS was not confined to the right hemisphere. Subsequent control

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“…Much of the past behavioral research on vection has focused on its time course. When a vection-inducing display is presented to a stationary observer, there is typically a finite delay before any illusory self-motion is reported (e.g., Brandt et al, 1973;Dichgans and Brandt, 1978;Seno et al, 2017Seno et al, , 2018Telford and Frost, 1993;Warren, 1995). This vection onset latency is often measured as the time interval from the start of the optic flow until the participant first presses a button.…”

Section: Introductionmentioning

confidence: 99%

Prior Exposure to Dynamic Visual Displays Reduces Vection Onset Latency

Ito

Ogawa

et al. 2022

Multisens. Res.

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While compelling illusions of self-motion (vection) can be induced purely by visual motion, they are rarely experienced immediately. This vection onset latency is thought to represent the time required to resolve sensory conflicts between the stationary observer’s visual and nonvisual information about self-motion. In this study, we investigated whether manipulations designed to increase the weightings assigned to vision (compared to the nonvisual senses) might reduce vection onset latency. We presented two different types of visual priming displays directly before our main vection-inducing displays: (1) ‘random motion’ priming displays — designed to pre-activate general, as opposed to self-motion-specific, visual motion processing systems; and (2) ‘dynamic no-motion’ priming displays — designed to stimulate vision, but not generate conscious motion perceptions. Prior exposure to both types of priming displays was found to significantly shorten vection onset latencies for the main self-motion display. These experiments show that vection onset latencies can be reduced by pre-activating the visual system with both types of priming display. Importantly, these visual priming displays did not need to be capable of inducing vection or conscious motion perception in order to produce such benefits.

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Vection Is Enhanced by Increased Exposure to Optic Flow

Cited by 21 publications

References 19 publications

The Effect of Optical Flow Motion Direction on Vection Strength

The Effect of Optical Flow Motion Direction on Vection Strength

Shift in lateralization during illusory self‐motion: EEG responses to visual flicker at 10 Hz and frequency‐specific modulation by tACS

Prior Exposure to Dynamic Visual Displays Reduces Vection Onset Latency

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