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Large-scale dissociations between views of objects, scenes, and reachable-scale environments in visual cortex

Emilie L. Josephs, Talia Konkle
doi: https://doi.org/10.1101/2020.02.20.956441
Emilie L. Josephs
Department of Psychology, Harvard University
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  • For correspondence: ejosephs@g.harvard.edu
Talia Konkle
Department of Psychology, Harvard University
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Abstract

Space-related processing recruits a network of brain regions separate from those recruited in object-related processing. This dissociation has largely been explored by contrasting views of navigable-scale spaces compared to close-up views of isolated objects. However, in naturalistic visual experience, we encounter spaces intermediate to these extremes, like the tops of desks and kitchen counters, which are not navigable but typically contain multiple objects. How are such reachable-scale views represented in the brain? In two functional neuroimaging experiments with human observers, we find evidence for a large-scale dissociation of reachable-scale views from both navigable scene views and close-up object views. Three brain regions were identified which showed a systematic response preference to reachable views, located in the posterior collateral sulcus, the inferior parietal sulcus, and superior parietal lobule. Subsequent analyses suggest that these three regions may be especially sensitive to the presence of multiple objects. Further, in all classic scene and object regions, reachable-scale views dissociated from both objects and scenes with an intermediate response magnitude. Taken together, these results establish that reachable-scale environments have a distinct representational signature from both scene and object views.

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  • https://osf.io/g9aj5/

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted February 20, 2020.
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Large-scale dissociations between views of objects, scenes, and reachable-scale environments in visual cortex
Emilie L. Josephs, Talia Konkle
bioRxiv 2020.02.20.956441; doi: https://doi.org/10.1101/2020.02.20.956441
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Large-scale dissociations between views of objects, scenes, and reachable-scale environments in visual cortex
Emilie L. Josephs, Talia Konkle
bioRxiv 2020.02.20.956441; doi: https://doi.org/10.1101/2020.02.20.956441

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