Inhibition of vection by red

Seno, Takeharu; Shoji, Shuichi; Ito, Hiroyuki

doi:10.3758/app.72.6.1642

Cited by 17 publications

(22 citation statements)

References 35 publications

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“…which inhibit vection (Seno et al, 2010), and the farthest stimulus tends to dominate vection (Ohmi and Howard, 1988). These findings suggest that vection is modulated in a bottom-up fashion.…”

Section: Top-down and Bottom-up Modulations Of Vectionmentioning

confidence: 88%

Stimulus Meanings Alter Illusory Self-motion (Vection) — Experimental Examination of the Train Illusion

Seno

Fukuda

2012

Seeing and Perceiving

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Over the last 100 years, numerous studies have examined the effective visual stimulus properties for inducing illusory self-motion (known as vection). This vection is often experienced more strongly in daily life than under controlled experimental conditions. One well-known example of vection in real life is the so-called 'train illusion'. In the present study, we showed that this train illusion can also be generated in the laboratory using virtual computer graphics-based motion stimuli. We also demonstrated that this vection can be modified by altering the meaning of the visual stimuli (i.e., top down effects). Importantly, we show that the semantic meaning of a stimulus can inhibit or facilitate vection, even when there is no physical change to the stimulus.

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Section: Top-down and Bottom-up Modulations Of Vectionmentioning

confidence: 88%

Stimulus Meanings Alter Illusory Self-motion (Vection) — Experimental Examination of the Train Illusion

Seno

Fukuda

2012

Seeing and Perceiving

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“…Seno et al ( 2010b ) examined effects of stimulus color by manipulating the color of expanding optical flows and a background. In their study, the color of the dots and background were either red or green, and the dots were equiluminant.…”

Section: Introductionmentioning

confidence: 99%

Single stimulus color can modulate vection

2015

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In the present study, we investigated the effects of single color on forward and backward vection. The approaching or receding optical flow observed during forward or backward locomotion was simulated by using random dots with changing size, velocity, and disparity. The dots were presented on a black (Experiments 1 and 2) or white background (Experiment 3) in equiluminant colors; namely, white (or gray), red, yellow, green, or blue. The participant's task was to press and hold one of three buttons whenever they felt vection. The three buttons corresponded to the subjective strength of vection: strong, same, and weak relative to vection induced by the standard modulus. In Experiments 1 and 2, the participants were also asked to rate the strength and direction of vection after each trial. In Experiment 3, they rated the visibility and the perceived velocity of dot motion. Experiment 1 showed that the induced vection was stronger for the chromatic than for the achromatic dots. Particularly at low velocity conditions (±10 km/h), the vection induced for red dots was stronger than that for the other colored dots. Experiment 2 showed that the order effects of stimulus presentation could not explain the findings of Experiment 1. Experiment 3's pattern of results was similar to that of Experiment 1, and this suggested that a luminance artifact between color conditions could not account for Experiment 1's findings. These results suggest that a stimulus color can modulate vection even when a single color is added to the optical flow.

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“…Most importantly, vection has been linked to visually induced MS (Hettinger, Berbaum, Kennedy, Dunlap, & Nolan, 1990;McCauley & Sharkey, 1992); and may be a precondition for visually induced MS (Crampton & Young, 1953;Smart, Stoffregen, & Bardy, 2002), as most users of virtual simulators who report sickness also experience vection (Hettinger et al). Vection itself is determined by a number of other factors, such as the participant's field of view (Brandt, Dichgans, & Koenig, 1973;IJsselsteijn, de Ridder, Freeman, Avons, & Bouwhuis, 2001) or even the color of the visual stimulus (Bonato & Bubka, 2006;Seno, Sunaga, & Ito, 2010). Apart from the role of the field of view, only a few studies have investigated the relationship between stereopsis and vection and found heterogeneous results.…”

Section: Introductionmentioning

confidence: 99%

Stereoscopic Viewing Enhances Visually Induced Motion Sickness but Sound Does Not

Keshavarz

Hecht

2012

Presence: Teleoperators and Virtual Environments

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Optic flow in visual displays or virtual environments often induces motion sickness (MS). We conducted two studies to analyze the effects of stereopsis, background sound, and realism (video vs. simulation) on the severity of MS and related feelings of immersion and vection. In Experiment 1, 79 participants watched either a 15-min-long video clip taken during a real roller coaster ride, or a precise simulation of the same ride. Additionally, half of the participants watched the movie in 2D, and the other half in 3D. MS was measured using the Simulator Sickness Questionnaire (SSQ) and the Fast Motion Sickness Scale (FMS). Results showed a significant interaction for both variables, indicating highest sickness scores for the real roller coaster video presented in 3D, while all other videos provoked less MS and did not differ among one another. In Experiment 2, 69 subjects were exposed to a video captured during a bicycle ride. Viewing mode (3D vs. 2D) and sound (on vs. off) were varied between subjects. Response measures were the same as in Experiment 1. Results showed a significant effect of stereopsis; MS was more severe for 3D presentation. Sound did not have a significant effect. Taken together, stereoscopic viewing played a crucial role in MS in both experiments. Our findings imply that stereoscopic videos can amplify visual discomfort and should be handled with care.

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Inhibition of vection by red

Cited by 17 publications

References 35 publications

Stimulus Meanings Alter Illusory Self-motion (Vection) — Experimental Examination of the Train Illusion

Stimulus Meanings Alter Illusory Self-motion (Vection) — Experimental Examination of the Train Illusion

Single stimulus color can modulate vection

Stereoscopic Viewing Enhances Visually Induced Motion Sickness but Sound Does Not

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