2020
DOI: 10.31234/osf.io/dv35h
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Forward optic flow is prioritised in visual awareness independently of walking direction

Abstract: When two different images are presented separately to each eye, one experiences smooth transitions between them. Previous studies have shown that exposure to signals from other senses can enhance perceptual awareness of stimulation-congruent images. Surprisingly, despite our ability to infer perceptual consequences from bodily movements, evidence that action can have an analogous influence on visual experience is scarce and mainly limited to local (hand) movements. Here, we investigated whether one’s direction… Show more

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Cited by 1 publication
(8 citation statements)
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References 87 publications
(128 reference statements)
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“…As expected, optic flow speeds were far higher when matched with the faster ( Me = 1.52, SD = 0.51 m/s) than with the slower walking pace ( Me = 0.97, SD = 0.30 m/s), Z = 5.84, p < .001, r = .87. In general, the results indicated a large overestimation of matched optic flow speeds in relation to actual walking velocities (faster: 0.69 m/s [2.5 km/hr]; slower: 0.42 m/s [1.5 km/hr]), which is in line with previous reports on perceived self-motion speed in VR setups (Banton et al., 2005; Caramenti et al., 2018, 2019; Durgin, Fox, et al., 2005; Motyka et al., 2021; Powell et al., 2011). Even though the magnitude of overestimation differed greatly between participants, the estimates were strongly correlated between walking speed conditions, r s = .82, p < .001.…”
Section: Resultssupporting
confidence: 91%
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“…As expected, optic flow speeds were far higher when matched with the faster ( Me = 1.52, SD = 0.51 m/s) than with the slower walking pace ( Me = 0.97, SD = 0.30 m/s), Z = 5.84, p < .001, r = .87. In general, the results indicated a large overestimation of matched optic flow speeds in relation to actual walking velocities (faster: 0.69 m/s [2.5 km/hr]; slower: 0.42 m/s [1.5 km/hr]), which is in line with previous reports on perceived self-motion speed in VR setups (Banton et al., 2005; Caramenti et al., 2018, 2019; Durgin, Fox, et al., 2005; Motyka et al., 2021; Powell et al., 2011). Even though the magnitude of overestimation differed greatly between participants, the estimates were strongly correlated between walking speed conditions, r s = .82, p < .001.…”
Section: Resultssupporting
confidence: 91%
“…The plausibility of such locomotion-driven effects is also supported by evidence of the widespread presence of locomotion-speed-related signals in the early stages of visual processing (for reviews, see Busse, 2018; Chaplin & Margrie, 2020; Parker et al., 2020) and the salient role of the primary visual cortex in integrating motor-based predictions of visual flow with the actual bottom-up signals (Attinger et al., 2017; Leinweber et al., 2017; Saleem et al., 2013). Notably, in contrast to self-motion speed, the direction of one’s locomotion was not found to promote visual awareness of congruent (expanding/contracting) optic flow patterns in previous binocular rivalry studies (Motyka et al., 2021; Paris et al., 2017). Interestingly, similar feature dependence of effects seems to hold for manual movements: whereas null findings were reported in studies manipulating spatial congruence between actions and visual rotation (Dogge et al., 2018; Suzuki et al., 2019; Veto et al., 2018), stimuli whose motion was driven by one’s hand movements—either in directionally congruent (Maruya et al., 2007) or both congruent and incongruent manners (Suzuki et al., 2019)—showed enhanced access to visual awareness as compared with uncoupled (prerecorded) visual changes.…”
Section: Discussioncontrasting
confidence: 66%
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