Distinct representations in occipito-temporal, parietal, and premotor cortex during action perception revealed by fMRI and computational modeling

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buir.contributor.authorÜrgen, Burcu A.
dc.citation.epage47en_US
dc.citation.spage35en_US
dc.citation.volumeNumber127en_US
dc.contributor.authorÜrgen, Burcu A.en_US
dc.contributor.authorPehlivan, S.en_US
dc.contributor.authorSaygın, A.en_US
dc.date.accessioned2020-02-07T12:12:44Z
dc.date.available2020-02-07T12:12:44Z
dc.date.issued2019
dc.departmentDepartment of Psychologyen_US
dc.departmentInterdisciplinary Program in Neuroscience (NEUROSCIENCE)en_US
dc.departmentNational Magnetic Resonance Research Center (UMRAM)en_US
dc.departmentAysel Sabuncu Brain Research Center (BAM)en_US
dc.description.abstractVisual processing of actions is supported by a network consisting of occipito-temporal, parietal, and premotor regions in the human brain, known as the Action Observation Network (AON). In the present study, we investigate what aspects of visually perceived actions are represented in this network using fMRI and computational modeling. Human subjects performed an action perception task during scanning. We characterized the different aspects of the stimuli starting from purely visual properties such as form and motion to higher-aspects such as intention using computer vision and categorical modeling. We then linked the models of the stimuli to the three nodes of the AON with representational similarity analysis. Our results show that different nodes of the network represent different aspects of actions. While occipito-temporal cortex performs visual analysis of actions by means of integrating form and motion information, parietal cortex builds on these visual representations and transforms them into more abstract and semantic representations coding target of the action, action type and intention. Taken together, these results shed light on the neuro-computational mechanisms that support visual perception of actions and provide support that AON is a hierarchical system in which increasing levels of the cortex code increasingly complex features.en_US
dc.embargo.release2021-10-01
dc.identifier.doi10.1016/j.neuropsychologia.2019.02.006en_US
dc.identifier.issn0028-3932
dc.identifier.urihttp://hdl.handle.net/11693/53176
dc.language.isoEnglishen_US
dc.publisherElsevieren_US
dc.relation.isversionofhttps://doi.org/10.1016/j.neuropsychologia.2019.02.006en_US
dc.source.titleNeuropsychologiaen_US
dc.subjectAction perceptionen_US
dc.subjectComputer visionen_US
dc.subjectFMRIen_US
dc.subjectRepresentational similarity analysisen_US
dc.subjectModelingen_US
dc.subjectPSTSen_US
dc.subjectInferior parietal cortexen_US
dc.subjectVentral premotor cortexen_US
dc.titleDistinct representations in occipito-temporal, parietal, and premotor cortex during action perception revealed by fMRI and computational modelingen_US
dc.typeArticleen_US

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Department of Psychology
Aysel Sabuncu Brain Research Center (BAM)
National Magnetic Resonance Research Center (UMRAM)