Dynamic dot displays reveal material motion network in the human brain

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buir.contributor.authorBoyacı, Hüseyin
buir.contributor.authorDoerschner, Katja
buir.contributor.orcidBoyacı, Hüseyin|0000-0003-3168-0654
buir.contributor.orcidDoerschner, Katja|0000-0002-8364-800X
dc.citation.epage10en_US
dc.citation.spage1en_US
dc.citation.volumeNumber228en_US
dc.contributor.authorSchmid, A. C.
dc.contributor.authorBoyacı, Hüseyin
dc.contributor.authorDoerschner,Katja
dc.date.accessioned2022-03-03T07:33:53Z
dc.date.available2022-03-03T07:33:53Z
dc.date.issued2021-03
dc.departmentDepartment of Psychologyen_US
dc.departmentNational Magnetic Resonance Research Center (UMRAM)en_US
dc.description.abstractThere is growing research interest in the neural mechanisms underlying the recognition of material categories and properties. This research field, however, is relatively more recent and limited compared to investigations of the neural mechanisms underlying object and scene category recognition. Motion is particularly important for the perception of non-rigid materials, but the neural basis of non-rigid material motion remains unexplored. Using fMRI, we investigated which brain regions respond preferentially to material motion versus other types of motion. We introduce a new database of stimuli – dynamic dot materials – that are animations of moving dots that induce vivid percepts of various materials in motion, e.g. flapping cloth, liquid waves, wobbling jelly. Control stimuli were scrambled versions of these same animations and rigid three-dimensional rotating dots. Results showed that isolating material motion properties with dynamic dots (in contrast with other kinds of motion) activates a network of cortical regions in both ventral and dorsal visual pathways, including areas normally associated with the processing of surface properties and shape, and extending to somatosensory and premotor cortices. We suggest that such a widespread preference for material motion is due to strong associations between stimulus properties. For example viewing dots moving in a specific pattern not only elicits percepts of material motion; one perceives a flexible, non-rigid shape, identifies the object as a cloth flapping in the wind, infers the object's weight under gravity, and anticipates how it would feel to reach out and touch the material. These results are a first important step in mapping out the cortical architecture and dynamics in material-related motion processing.en_US
dc.identifier.doi10.1016/j.neuroimage.2020.117688en_US
dc.identifier.eissn1095-9572
dc.identifier.issn1053-8119
dc.identifier.urihttp://hdl.handle.net/11693/77667
dc.language.isoEnglishen_US
dc.publisherElsevier BVen_US
dc.relation.isversionofhttps://doi.org/10.1016/j.neuroimage.2020.117688en_US
dc.source.titleNeuroImageen_US
dc.subjectMaterial perceptionen_US
dc.subjectMotionen_US
dc.subjectfMRIen_US
dc.subjectPoint-light motionen_US
dc.subjectDynamic doten_US
dc.subjectStructure from motionen_US
dc.titleDynamic dot displays reveal material motion network in the human brainen_US
dc.typeArticleen_US
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