Dissociable signatures of visual salience and behavioral relevance across attentional priority maps in human cortex

Journal of Neurophysiology
Thomas C SpragueJohn T Serences

Abstract

Computational models posit that visual attention is guided by activity within spatial maps that index the image-computable salience and the behavioral relevance of objects in the scene. These spatial maps are theorized to be instantiated as activation patterns across a series of retinotopic visual regions in occipital, parietal, and frontal cortex. Whereas previous research has identified sensitivity to either the behavioral relevance or the image-computable salience of different scene elements, the simultaneous influence of these factors on neural "attentional priority maps" in human cortex is not well understood. We tested the hypothesis that visual salience and behavioral relevance independently impact the activation profile across retinotopically organized cortical regions by quantifying attentional priority maps measured in human brains using functional MRI while participants attended one of two differentially salient stimuli. We found that the topography of activation in priority maps, as reflected in the modulation of region-level patterns of population activity, independently indexed the physical salience and behavioral relevance of each scene element. Moreover, salience strongly impacted activation patterns in early vi...Continue Reading

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Citations

Jul 3, 2019·Nature Neuroscience·Rosanne L RademakerJohn T Serences
Aug 10, 2019·PLoS Biology·Sirawaj ItthipuripatJohn T Serences
Oct 17, 2019·Annals of the New York Academy of Sciences·Jennifer D RyanZhong-Xu Liu
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Feb 6, 2020·Journal of Cognitive Neuroscience·Anthony W SaliTobias Egner
Dec 29, 2020·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Katya Olmos-SolisChristian N L Olivers
Oct 4, 2020·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Bo-Yeong WonJoy J Geng
Aug 7, 2021·Nature Communications·Grace E HallenbeckClayton E Curtis
Dec 24, 2021·Journal of Cognitive Neuroscience·Aspen H YooClayton E Curtis

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