Who's got the global advantage? Visual field differences in processing of global and local shape

Gerlach, Christian; Poirel, Nicolas

doi:10.1016/j.cognition.2019.104131

Cited by 14 publications

(15 citation statements)

References 40 publications

(60 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This finding is important, but not because global organizations always carry meaningful information for making summary judgments (the shape of a crowd of faces is unlikely to have any relevance for a judgment about their average emotion, for example). Rather, our findings pertain more broadly to the ensemble mechanism itselfthey clarify what kinds of visual information can be included in ensemble codes, and they reposition the mechanism more comfortably with decades of work indicating that local and global processing interact, with global-or gist-level information taking precedence (Kimchi, 2015;Navon, 1977;Nie et al, 2017) or being available to awareness first (Gerlach & Poirel, 2020). Our results suggest that summary representations are formed at a timepoint after the parallel and distinct processing of local and global information is complete (Flevaris & Robertson, 2016;Hübner & Volberg, 2005).…”

Section: Discussionsupporting

confidence: 62%

“…2). We elected to use object-substitution masking (i.e., OSM; Enns, 2004;Enns & Di Lollo, 1997;Goodhew et al, 2013) because it was useful for disrupting visual awareness of our shape stimuli in a previous investigation (Braun & Sweeny, 2019;Elias et al, 2018), but we acknowledge that other forms of masking (e.g., metacontrast or backward masking) could have met our needs as well. We note that this was not an investigation of OSM, so we limit our discussion of its mechanisms and simply note that we selected dot sizes, distances, and timing parameters based on values that produced effective masking in our previous work (Braun & Sweeny, 2019;Elias et al, 2018).…”

Section: Methodsmentioning

confidence: 99%

“…This is evident in the early work of the Gestaltists (Köhler, 1930;Wertheimer, 1923), as well as in more modern research on perceptual organization (Kimchi, 1994;Wagemans et al, 2012), visual search (Wolfe et al, 2011), scene perception (Brady & Shafer-Skelton, 2017;Oliva & Torralba, 2006), and visual awareness (Hochstein & Ahissar, 2002). Local and global information appear to be processed in parallel (Gerlach & Poirel, 2020), and by distinct neural mechanisms (Bijanzadeh et al, 2018;Liu & Luo, 2019) that operate at different timescales. According to Reverse-Hierarchy Theory, global information is made available to awareness before local information (Campana et al, 2016;Hochstein et al, 2015;Hochstein & Ahissar, 2002).…”

Section: Introductionmentioning

confidence: 99%

“…There are several reasons to predict that they should. First, information at the global scale is known to take precedence in perception (Campana et al, 2016;Kimchi, 2015;Navon, 1977;Nie et al, 2017), potentially being processed more quickly than local information (Gerlach & Poirel, 2020). Second, even though local and global information are known to be processed separately (Bijanzadeh et al, 2018;Hübner & Volberg, 2005;Liu & Luo, 2019), their integration has been proposed to occur automatically, or pre-attentively (Gerlach & Poirel, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…First, information at the global scale is known to take precedence in perception (Campana et al, 2016;Kimchi, 2015;Navon, 1977;Nie et al, 2017), potentially being processed more quickly than local information (Gerlach & Poirel, 2020). Second, even though local and global information are known to be processed separately (Bijanzadeh et al, 2018;Hübner & Volberg, 2005;Liu & Luo, 2019), their integration has been proposed to occur automatically, or pre-attentively (Gerlach & Poirel, 2020). Third, information from both the local and the global scales appear to be stored in visual working memory, simultaneously (Brady & Alvarez, 2011), with the global scale being prioritized (Nie et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Ensemble perception includes information from multiple spatial scales

Sweeny

Elias

2020

Atten Percept Psychophys

View full text Add to dashboard Cite

Most visual scenes contain information at different spatial scales, including the local and global, or the detail and gist. Global processes have become increasingly implicated in research examining summary statistical perception, initially as the output of ensemble coding, and more recently as a gating mechanism for selecting which information is included in the averaging process itself. Yet local and global processing are known to be rapidly integrated by the visual system, and it is plausible that global-level information, like spatial organization, may be included as an input during ensemble coding. We tested this hypothesis using an ensemble shape-perception task in which observers evaluated the mean aspect ratios of sets of ellipses. In addition to varying the aspect ratios of the individual shapes, we independently varied the spatial arrangements of the sets so that they had either flat or tall organizations at the global level. We found that observers made precise summary judgments about the average aspect ratios of the sets by integrating information from multiple shapes. More importantly, global flat and tall organizations were incorporated into ensemble judgments about the sets; summary judgments were biased in the directions of the global spatial arrangements on each trial. This global-to-local integration even occurred when the global organizations were masked. Our results demonstrate that the process of summary representation can include information from both the local and global scales. The gist is not just an output of ensemble representationit can be included as an input to the mechanism itself.

show abstract

Section: Discussionsupporting

confidence: 62%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Ensemble perception includes information from multiple spatial scales

Sweeny

Elias

2020

Atten Percept Psychophys

View full text Add to dashboard Cite

show abstract

Global–local consistency benefits memory‐guided tracking of a moving target

et al. 2021

View full text Add to dashboard Cite

Introduction Previous findings have demonstrated that several Gestalt principles do facilitate VSTM performance in change detection tasks. However, few studies have investigated the role of and time‐course of global–local consistency in motion perception. Methods Participants were required to track a moving target surrounded by three different backgrounds: blank, inconsistent, or consistent. Global–local objects were be bound to move together (covariation). During the PMT, participants had to follow the moving target with their eyes and react as fast as possible when the target had just vanished behind the obstruction or would arrive at a predetermined point of interception. Variable error (VE) and constant error (CE) of estimated time‐to‐contact (TTC) and gain of smooth pursuit eye movements were calculated in various conditions and analyzed qualitatively. Results Experiment 1 established the basic finding that VSTM performance could benefit from global–local consistency. Experiment 2 extended this finding by eye‐tracking device. Both in visible phase and in occluded phase, CEs were smaller for the target in a consistent background than for the target in an inconsistent background and for the target in a blank background, with both differences significant (ps < .05). However, the difference in VE among three conditions was not significant. At early stage (100–250 ms), later stage (2750–3000 ms), and termination stage (5750–6000 ms) of smooth pursuit, the velocity gains were higher in the trials with consistent backgrounds than in the trials with inconsistent backgrounds and blank backgrounds (ps < .001). With the exception of 100–250 ms phase, the means did not differ between the inconsistent background and the blank background trials (ps > .1). Conclusions Global–local consistency could be activated within the first few hundred milliseconds to prioritize the deployment of attention and eye movement to component target. Meanwhile, it also removes ambiguity from motion tracking and TTC estimation under some unpredictable conditions, leading to the consistency advantage during smooth‐pursuit termination phase. Global–local consistency may act as an important information source to TTC estimation and oculomotor response in PMT.

show abstract

Brief Report: Local–Global Processing and Co-occurrence of Anxiety, Autistic and Obsessive–Compulsive Traits in a Non-clinical Sample

Retzler

2023

J Autism Dev Disord

View full text Add to dashboard Cite

Purpose: Increased local-to-global interference has been found in those with ASD, AD and OCD, and as such, may represent a transdiagnostic marker. As a first step to investigating this, we aimed to assess the overlap in traits of these disorders in a non-clinical sample, and whether local-global processing relates to the traits of the three conditions. Methods: Participants (n=149) completed questionnaires including the Autism Quotient (AQ), the Obsessive-Compulsive Inventory (OCI-R) and the Zung Self-rating Anxiety Scale (SAS) and an online version of the Navon task. Behavioural metrics of interference and precedence were extracted from the task and correlated with trait scores.Results: We found moderate to strong correlations between the total scores for ASD, anxiety and OCD. Most local-global processing indices did not relate to traits. Conclusion:The study found evidence for an overlap in autism, anxiety and obsessivecompulsive traits in a non-clinical sample. However, local-global processing, as measured by the Navon task, did not appear to underpin symptomatology in the sample and could not be Investigating local-global processing as a transdiagnostic marker considered a transdiagnostic marker. Future research should investigate the value of alternate metrics.

show abstract

Who's got the global advantage? Visual field differences in processing of global and local shape

Cited by 14 publications

References 40 publications

Ensemble perception includes information from multiple spatial scales

Ensemble perception includes information from multiple spatial scales

Global–local consistency benefits memory‐guided tracking of a moving target

Brief Report: Local–Global Processing and Co-occurrence of Anxiety, Autistic and Obsessive–Compulsive Traits in a Non-clinical Sample

Contact Info

Product

Resources

About