The role of visual contextual cues on motion extrapolation: A single horizon line biases the Representational Horizon

The role of visual contextual cues on motion extrapolation: A single horizon line biases the Representational Horizon | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article The role of visual contextual cues on motion extrapolation: A single horizon line biases the Representational Horizon Rodrigo Ribeiro Freitas, Samuel Silva, Nuno Alexandre De Sá Teixeira This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8039700/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract The perceived offset position of a moving target is systematically displaced forward, in the direction of motion (Representational Momentum; RM), downward, in the direction of gravity (Representational Gravity; RG), and along the horizon implied by the visual context (Representational Horizon; RH). The latter has been shown to depend on visual context orientation, particularly in exterior settings where horizon cues are salient. Building on this evidence, the present study examined whether RH can be reliably biased by minimal visual cues that efficiently imply a horizon axis and investigated their differential impact on motion extrapolation phenomena. Participants observed moving targets following various trajectories, overlaid on a randomly chosen visual context depicting either a combined ground and sky gradients, an isolated ground or sky gradient, or a single horizon line context rotated -22.5º, 0º, or 22.5º relative to the true vertical. Upon the target's vanishing, participants indicated its last seen location with a trackball. Spatial localizations were subjected to a discrete Fourier decomposition procedure to obtain independent estimates of RM, RG, and RH. Outcomes showed that RH direction consistently followed the horizon implied by the visual context across all conditions. Furthermore, RM magnitude increased with the sky gradient and decreased with the ground gradient, indicating sensitivity to ecological features. These findings underscore the pivotal role of horizon information in visuospatial orientation and contribute to a better understanding of extrapolation phenomena. Representational Momentum Representational Gravity Representational Horizon Motion Perception Spatial Orientation Visual Cues Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. 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The latter has been shown to depend on visual context orientation, particularly in exterior settings where horizon cues are salient. Building on this evidence, the present study examined whether RH can be reliably biased by minimal visual cues that efficiently imply a horizon axis and investigated their differential impact on motion extrapolation phenomena. Participants observed moving targets following various trajectories, overlaid on a randomly chosen visual context depicting either a combined ground and sky gradients, an isolated ground or sky gradient, or a single horizon line context rotated -22.5º, 0º, or 22.5º relative to the true vertical. Upon the target's vanishing, participants indicated its last seen location with a trackball. Spatial localizations were subjected to a discrete Fourier decomposition procedure to obtain independent estimates of RM, RG, and RH. 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