Visual, haptic and bimodal scene perception: evidence for a unitary representation

Cognition
Helene IntraubKristin Michod Gagnier

Abstract

Participants studied seven meaningful scene-regions bordered by removable boundaries (30s each). In Experiment 1 (N = 80) participants used visual or haptic exploration and then minutes later, reconstructed boundary position using the same or the alternate modality. Participants in all groups shifted boundary placement outward (boundary extension), but visual study yielded the greater error. Critically, this modality-specific difference in boundary extension transferred without cost in the cross-modal conditions, suggesting a functionally unitary scene representation. In Experiment 2 (N = 20), bimodal study led to boundary extension that did not differ from haptic exploration alone, suggesting that bimodal spatial memory was constrained by the more "conservative" haptic modality. In Experiment 3 (N = 20), as in picture studies, boundary memory was tested 30s after viewing each scene-region and as with pictures, boundary extension still occurred. Results suggest that scene representation is organized around an amodal spatial core that organizes bottom-up information from multiple modalities in combination with top-down expectations about the surrounding world.

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Citations

May 6, 2016·Frontiers in Behavioral Neuroscience·Achille Pasqualotto, Tayfun Esenkaya
Sep 2, 2016·Developmental Science·Erica Kreindel, Helene Intraub
May 10, 2018·Scientific Reports·Satoshi ShioiriIchiro Kuriki
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Jun 10, 2017·Psychological Research·Gianluca MacaudaPeter Brugger
Sep 22, 2017·I-Perception·Emmanuelle MénétrierFrédérique Robin
Jul 18, 2018·Attention, Perception & Psychophysics·Emmanuelle MénétrierValérie Barbe
Dec 23, 2020·Current Biology : CB·Helene Intraub
Dec 29, 2021·Cognitive Processing·Magdalena SzubielskaWenke Möhring

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