Category-selective top-down modulation in the fusiform face area of the human brain during visual search

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buir.contributor.authorDar, Salman Ul Hassan
buir.contributor.authorÇukur, Tolga
dc.contributor.authorDar, Salman Ul Hassanen_US
dc.contributor.authorÇukur, Tolgaen_US
dc.coverage.spatialAntalya, Turkeyen_US
dc.date.accessioned2018-04-12T11:45:10Z
dc.date.available2018-04-12T11:45:10Z
dc.date.issued2017en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentNational Magnetic Resonance Research Center (UMRAM)en_US
dc.departmentInterdisciplinary Program in Neuroscience (NEUROSCIENCE)en_US
dc.departmentAysel Sabuncu Brain Research Center (BAM)en_US
dc.descriptionDate of Conference: 15-18 May 2017en_US
dc.descriptionConference Name: IEEE 25th Signal Processing and Communications Applications Conference, SIU 2017en_US
dc.description.abstractSeveral regions in the ventral-temporal cortex of the human brain are thought to have representations of specific categories of objects. Furthermore, a distributed network of frontal and parietal brain regions is implicated in attentional control. It is assumed that during visual search, attention-control regions send top-down signals to the target category-selective areas to bias the processing in favour of the attended object category. However, little is known about such causal interactions during naturalistic visual search. Here we assess the influence of attention-control brain regions on a well-known face selective area fusiform face area (FFA) during natural visual search using Granger causality analysis. Our results indicate that attending to humans enhances the influence of attention-control regions on the fusiform face area.en_US
dc.identifier.doi10.1109/SIU.2017.7960222en_US
dc.identifier.urihttp://hdl.handle.net/11693/37599
dc.language.isoEnglishen_US
dc.publisherIEEEen_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/SIU.2017.7960222en_US
dc.source.titleProceedings of the IEEE 25th Signal Processing and Communications Applications Conference, SIU 2017en_US
dc.subjectBrain connectivityen_US
dc.subjectCategory selectivityen_US
dc.subjectFunctional MRIen_US
dc.subjectGranger causalityen_US
dc.subjectFlood controlen_US
dc.subjectSemiconducting indium gallium arsenideen_US
dc.subjectStatistical testsen_US
dc.subjectAttention controlen_US
dc.subjectDistributed networksen_US
dc.subjectGranger causality analysisen_US
dc.subjectFunctional neuroimagingen_US
dc.titleCategory-selective top-down modulation in the fusiform face area of the human brain during visual searchen_US
dc.typeConference Paperen_US

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Department of Electrical and Electronics Engineering
Aysel Sabuncu Brain Research Center (BAM)
National Magnetic Resonance Research Center (UMRAM)