Mind the Depth: Visual Perception of Shapes Is Better in Peripersonal Space

Blini, Elvio; Désoche, Clément; Salemme, Roméo; Kabil, Alexandre; Hadj-Bouziane, Fadila; Farnè, Alessandro

doi:10.1177/0956797618795679

Cited by 31 publications

(29 citation statements)

References 33 publications

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“…Since certain critical stimuli in evolutionary terms, such as threats, tend to appear in the LoVF (Isbell, 2006), stimuli appearing at this hemifield should present certain perceptual advantage (in terms of detection and recognition). Indeed, several studies confirm this LoVF advantage in target detection tasks (e.g., Blini et al, 2018;Losier & Clane, 2004). Other studies exploring several visual attributes show the LoVF advantage is limited to parameters such as of motion, contrast and hue, whereas others, such as distance/ depth, would be better perceived for UFV stimuli (e.g., Levine & McAnany, 2005).…”

Section: Introductionmentioning

confidence: 85%

Retinotopy of emotion: Perception of negatively valenced stimuli presented at different spatial locations as revealed by event‐related potentials

Carretié

Méndez‐Bértolo

Bódalo

et al. 2019

Human Brain Mapping

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Scarce previous data on how the location where an emotional stimulus appears in the visual scene modulates its perception suggest that, for functional reasons, a perceptual advantage may exist, vertically, for stimuli presented at the lower visual field (LoVF) and, horizontally, for stimuli presented at the left visual field (LeVF). However, this issue has been explored through a limited number of spatial locations, usually in a single spatial dimension (e.g., horizontal) and invariant eccentricities. Event‐related potentials (ERPs) were recorded from 39 participants perceiving brief neutral (wheels) and emotional stimuli (spiders) presented at 17 different locations, one foveal and 16 at different peripheral coordinates. As a secondary scope, we explored the role of the magnocellular (M) and the parvocellular (P) visual pathways by presenting an isoluminant/heterochromatic (P‐biased) and a heteroluminant/isochromatic version (M‐biased) of each stimulus. Emo > Neu effects were observed in PN1 (120 ms) for stimuli located at fovea, and in PN2 (215 ms) for stimuli located both at fovea and diverse peripheral regions. A factorial approach to these effects further revealed that: (a) emotional stimuli presented in the periphery are efficiently perceived, without evident decrease from para‐ to perifovea; (b) peripheral Emo > Neu effects are reflected 95 ms later than foveal Emo > Neu effects in ERPs; (c) LoVF is more involved than UVF in these effects; (d) our data fail to support the LeVF advantage previously reported, and (e) Emo > Neu effects were significant for both M and P stimuli.

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Section: Introductionmentioning

confidence: 85%

Retinotopy of emotion: Perception of negatively valenced stimuli presented at different spatial locations as revealed by event‐related potentials

Carretié

Méndez‐Bértolo

Bódalo

et al. 2019

Human Brain Mapping

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“…2002 ), and hence, the fact that, when paired with tactile stimuli, this component is moderated by visuo-tactile distance implies that visual perception itself may be different within and outside the PPS. Indeed, initial studies in this domain have suggested that shape discrimination is better within the PPS—even after accounting for relative size ( Blini et al. 2019 ).…”

Section: Discussionmentioning

confidence: 99%

Rapid Recalibration of Peri-Personal Space: Psychophysical, Electrophysiological, and Neural Network Modeling Evidence

et al. 2020

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Interactions between individuals and the environment occur within the peri-personal space (PPS). The encoding of this space plastically adapts to bodily constraints and stimuli features. However, these remapping effects have not been demonstrated on an adaptive time-scale, trial-to-trial. Here, we test this idea first via a visuo-tactile reaction time (RT) paradigm in augmented reality where participants are asked to respond as fast as possible to touch, as visual objects approach them. Results demonstrate that RTs to touch are facilitated as a function of visual proximity, and the sigmoidal function describing this facilitation shifts closer to the body if the immediately precedent trial had indexed a smaller visuo-tactile disparity. Next, we derive the electroencephalographic correlates of PPS and demonstrate that this multisensory measure is equally shaped by recent sensory history. Finally, we demonstrate that a validated neural network model of PPS is able to account for the present results via a simple Hebbian plasticity rule. The present findings suggest that PPS encoding remaps on a very rapid time-scale and, more generally, that it is sensitive to sensory history, a key feature for any process contextualizing subsequent incoming sensory information (e.g., a Bayesian prior).

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“…As outlined above there is no general consensus about the role of depth in attentional processing. Yet, several studies indicate that there is an egocentric attentional gradient through space that implies prioritization of stimuli in near compared to far depth planes (Andersen & Kramer, 1993;Arnott & Shedden, 2000;Blini et al, 2018;Chen, Weidner, Vossel, Weiss, & Fink, 2012;Downing & Pinker, 1985;Finlayson & Grove, 2015;Plewan & Rinkenauer, 2016Wang, Liu, Chen, & Zhang, 2016). In a recent study, Finlayson and Grove (2015) presented a visual search task across up to four depth planes.…”

Section: Introductionmentioning

confidence: 99%

Allocation of attention in 3D space is adaptively modulated by relative position of target and distractor stimuli

Plewan

Rinkenauer

2019

Atten Percept Psychophys

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Allocation of attention across different depth planes is a prerequisite for visual selection in a three-dimensional environment. Previous research showed that participants successfully used stereoscopic depth information to focus their attention. This, however, does not mean that salient information from other depth planes is completely neglected. The present study investigated the question of whether competing visual information is differentially processed when displayed in a single depth plane or across two different depth planes. Moreover, it was of interest whether potential effects were further modulated by the items' relative spatial position (near or far). In three experiments participants performed a variant of the additional singleton paradigm. Targets were defined by stereoscopic depth information and as such appeared either in a near or far depth plane. Distractor stimuli were displayed in the same or in the opposed depth plane. The results consistently showed that visual selection was slower when target and distractor coincided within the same depth plane. There was no general advantage for targets presented in near or far depth planes. However, differential effects of target depth plane and the target-distractor relation were observed. Selection of near targets was more affected by distractors within the same depth plane while far targets were identified more slowly when the amount of information in closer depth planes increased. While attentional resources could not be exclusively centered to a distinct depth plane, the allocation of attention might be organized along an egocentric gradient through space and varies with the organization of the visual surrounding.

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Mind the Depth: Visual Perception of Shapes Is Better in Peripersonal Space

Cited by 31 publications

References 33 publications

Retinotopy of emotion: Perception of negatively valenced stimuli presented at different spatial locations as revealed by event‐related potentials

Retinotopy of emotion: Perception of negatively valenced stimuli presented at different spatial locations as revealed by event‐related potentials

Rapid Recalibration of Peri-Personal Space: Psychophysical, Electrophysiological, and Neural Network Modeling Evidence

Allocation of attention in 3D space is adaptively modulated by relative position of target and distractor stimuli

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