The relationship between co-speech gesture production and macrolinguistic discourse abilities in people with focal brain injury

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dc.citation.epage453en_US
dc.citation.spage440en_US
dc.citation.volumeNumber117en_US
dc.contributor.authorAkbıyık, S.en_US
dc.contributor.authorKaraduman, A.en_US
dc.contributor.authorGöksun, T.en_US
dc.contributor.authorChatterjee, A.en_US
dc.date.accessioned2019-02-21T16:01:53Z
dc.date.available2019-02-21T16:01:53Z
dc.date.issued2018en_US
dc.departmentNational Magnetic Resonance Research Center (UMRAM)en_US
dc.description.abstractBrain damage is associated with linguistic deficits and might alter co-speech gesture production. Gesture production after focal brain injury has been mainly investigated with respect to intrasentential rather than discourse-level linguistic processing. In this study, we examined 1) spontaneous gesture production patterns of people with left hemisphere damage (LHD) or right hemisphere damage (RHD) in a narrative setting, 2) the neural structures associated with deviations in spontaneous gesture production in these groups, and 3) the relationship between spontaneous gesture production and discourse level linguistic processes (narrative complexity and evaluation competence). Individuals with LHD or RHD (17 people in each group) and neurotypical controls (n = 13) narrated a story from a picture book. Results showed that increase in gesture production for LHD individuals was associated with less complex narratives and lesions of individuals who produced more gestures than neurotypical individuals overlapped in frontal-temporal structures and basal ganglia. Co-speech gesture production of RHD individuals positively correlated with their evaluation competence in narrative. Lesions of RHD individuals who produced more gestures overlapped in the superior temporal gyrus and the inferior parietal lobule. Overall, LHD individuals produced more gestures than neurotypical individuals. The groups did not differ in their use of different gesture forms except that LHD individuals produced more deictic gestures per utterance than RHD individuals and controls. Our findings are consistent with the hypothesis that co-speech gesture production interacts with macro-linguistic levels of discourse and this interaction is affected by the hemispheric lateralization of discourse abilities.
dc.description.provenanceMade available in DSpace on 2019-02-21T16:01:53Z (GMT). No. of bitstreams: 1 Bilkent-research-paper.pdf: 222869 bytes, checksum: 842af2b9bd649e7f548593affdbafbb3 (MD5) Previous issue date: 2018en
dc.description.sponsorshipThis research was supported in part by NIH RO1DC012511 and grants to the Spatial Intelligence and Learning Center, funded by the National Science Foundation (subcontracts under SBE-0541957 and SBE-1041707 ). We would like to thank Marianna Stark and Eileen Cardillo for their help in recruiting people with brain injury. We also thank Language and Cognition Lab members at Koç University for discussions about the project, and Hazal Kartalkanat for helping with reliability coding.
dc.embargo.release2020-02-01en_US
dc.identifier.doi10.1016/j.neuropsychologia.2018.06.025
dc.identifier.issn0028-3932
dc.identifier.urihttp://hdl.handle.net/11693/49934
dc.language.isoEnglish
dc.publisherElsevier
dc.relation.isversionofhttps://doi.org/10.1016/j.neuropsychologia.2018.06.025
dc.relation.projectNational Science Foundation, NSF: SBE-0541957, SBE-1041707 - RO1DC012511
dc.source.titleNeuropsychologiaen_US
dc.subjectFocal brain injuryen_US
dc.subjectGestureen_US
dc.subjectMacrolinguistic abilitiesen_US
dc.subjectNarrative complexityen_US
dc.subjectNarrative evaluationen_US
dc.titleThe relationship between co-speech gesture production and macrolinguistic discourse abilities in people with focal brain injuryen_US
dc.typeArticleen_US

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