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• W2897435104 abstract "The Selective Tuning model of visual attention (Tsotsos, 1990) has proposed that the focus of attention is surrounded by an inhibitory zone, eliciting a center-surround attentional distribution. This attentional suppressive surround inhibits irrelevant information which is located close to attended information in physical space (e.g., Cutzu and Tsotsos, 2003; Hopf et al., 2010) or in feature space (e.g., Tombu and Tsotsos, 2008; Störmer and Alvarez, 2014; Bartsch et al., 2017). In Experiment 1, we investigate the interaction between location-based and feature-based surround suppression and hypothesize that the attentional surround suppression would be maximized when spatially adjacent stimuli are also represented closely within a feature map. Our results demonstrate that perceptual discrimination is worst when two similar orientations are presented in proximity to each other, suggesting the interplay of the two surround suppression mechanisms. The Selective Tuning model also predicts that the size of the attentional suppressive surround is determined by the receptive field size of the neuron which optimally processes the attended information. The receptive field size of the processing neurons is tightly associated with stimulus size and eccentricity. Therefore, Experiment 2 tested the hypothesis that the size of the attentional suppressive surround would become larger as stimulus size and eccentricity increase, corresponding to an increase in the neuron's receptive field size. We show that stimulus eccentricity but not stimulus size modulates the size of the attentional suppressive surround. These results are consistent for both low- and high-level features (e.g., orientation and human faces). Overall, the present study supports the existence of the attentional suppressive surround and reveals new properties of this selection mechanism." @default.
• W2897435104 created "2018-10-26" @default.
• W2897435104 creator A5009123037 @default.
• W2897435104 creator A5072681668 @default.
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• W2897435104 date "2018-10-08" @default.
• W2897435104 modified "2023-10-18" @default.
• W2897435104 title "The Attentional Suppressive Surround: Eccentricity, Location-Based and Feature-Based Effects and Interactions" @default.
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• W2897435104 doi "https://doi.org/10.3389/fnins.2018.00710" @default.
• W2897435104 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6186833" @default.
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• W2897435104 hasPublicationYear "2018" @default.
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