A parietal region processing numerosity of observed actions: An FMRI study

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buir.contributor.authorÜrgen, Burcu A.
dc.citation.epage4750en_US
dc.citation.issueNumber12en_US
dc.citation.spage4732en_US
dc.citation.volumeNumber52en_US
dc.contributor.authorSawamura, H.
dc.contributor.authorÜrgen, Burcu A.
dc.contributor.authorCorbo, D.
dc.contributor.authorOrban, G. A.
dc.date.accessioned2021-02-18T10:42:35Z
dc.date.available2021-02-18T10:42:35Z
dc.date.issued2020-07
dc.departmentDepartment of Psychologyen_US
dc.departmentInterdisciplinary Program in Neuroscience (NEUROSCIENCE)en_US
dc.departmentNational Magnetic Resonance Research Center (UMRAM)en_US
dc.description.abstractWhen observing others' behavior, it is important to perceive not only the identity of the observed actions (OAs), but also the number of times they were performed. Given the mounting evidence implicating posterior parietal cortex in action observation, and in particular that of manipulative actions, the aim of this study was to identify the parietal region, if any, that contributes to the processing of observed manipulative action (OMA) numerosity, using the functional magnetic resonance imaging technique. Twenty‐one right‐handed healthy volunteers performed two discrimination tasks while in the scanner, responding to video stimuli in which an actor performed manipulative actions on colored target balls that appeared four times consecutively. The subjects discriminated between two small numerosities of either OMAs (“Action” condition) or colors of balls (“Ball” condition). A significant difference between the “Action” and “Ball” conditions was observed in occipito‐temporal cortex and the putative human anterior intraparietal sulcus (phAIP) area as well as the third topographic map of numerosity‐selective neurons at the post‐central sulcus (NPC3) of the left parietal cortex. A further region of interest analysis of the group‐average data showed that at the single voxel level the latter area, more than any other parietal or occipito‐temporal numerosity map, favored numerosity of OAs. These results suggest that phAIP processes the identity of OMAs, while neighboring NPC3 likely processes the numerosity of the identified OAs.en_US
dc.embargo.release2021-07-26
dc.identifier.doi10.1111/ejn.14930en_US
dc.identifier.issn0953-816X
dc.identifier.urihttp://hdl.handle.net/11693/75446
dc.language.isoEnglishen_US
dc.publisherWileyen_US
dc.relation.isversionofhttps://doi.org/10.1111/ejn.14930en_US
dc.source.titleEuropean Journal of Neuroscienceen_US
dc.subjectAction observationen_US
dc.subjectHuman fMRI studyen_US
dc.subjectNumerosity of actionsen_US
dc.subjectPosterior parietal cortexen_US
dc.titleA parietal region processing numerosity of observed actions: An FMRI studyen_US
dc.typeArticleen_US

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