Cytoarchitectonic mapping of attentional selection and reorienting in parietal cortex.
Selection and reorienting are two fundamental aspects of spatial attention. By means of event-related fMRI in a total of 26 subjects, we localized these two processes within a same experiment applying a probabilistic cytoarchitectonic reference frame. In a classical spatial cueing paradigm, the targ...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2013
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| _version_ | 1797053651878936576 |
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| author | Gillebert, C Mantini, D Peeters, R Dupont, P Vandenberghe, R |
| author_facet | Gillebert, C Mantini, D Peeters, R Dupont, P Vandenberghe, R |
| author_sort | Gillebert, C |
| collection | OXFORD |
| description | Selection and reorienting are two fundamental aspects of spatial attention. By means of event-related fMRI in a total of 26 subjects, we localized these two processes within a same experiment applying a probabilistic cytoarchitectonic reference frame. In a classical spatial cueing paradigm, the target was presented at the cued location either alone (60% of trials) or in combination with a contralateral distracter ('competition trials', 20% of trials), or at a location opposite to the cued location ('invalidly cued trials', 20% of trials). In a sensory control experiment we differentiated between the attentional and the sensory effects of the distracter. In areas hIP1 and hIP3, competition trials exerted a significantly stronger attentional effect than invalidity trials. Conversely, area PF in the right hemisphere showed an invalidity effect in the absence of competition effect. A third type of response was found in areas PFm and PGa which showed both an invalidity and a competition effect. The combined study of selection and reorienting using a cytoarchitectonic reference frame enabled us to resolve the wide between-study variance in temporoparietal coordinates associated with the invalidity effect. Furthermore, the study demonstrated within a same experiment a functional dissociation between reorienting and selection in parietal cortex. |
| first_indexed | 2024-03-06T18:46:40Z |
| format | Journal article |
| id | oxford-uuid:0ec02656-eaff-4e90-b40c-9a6c6544b8a4 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:46:40Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | oxford-uuid:0ec02656-eaff-4e90-b40c-9a6c6544b8a42022-03-26T09:47:37ZCytoarchitectonic mapping of attentional selection and reorienting in parietal cortex.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0ec02656-eaff-4e90-b40c-9a6c6544b8a4EnglishSymplectic Elements at Oxford2013Gillebert, CMantini, DPeeters, RDupont, PVandenberghe, RSelection and reorienting are two fundamental aspects of spatial attention. By means of event-related fMRI in a total of 26 subjects, we localized these two processes within a same experiment applying a probabilistic cytoarchitectonic reference frame. In a classical spatial cueing paradigm, the target was presented at the cued location either alone (60% of trials) or in combination with a contralateral distracter ('competition trials', 20% of trials), or at a location opposite to the cued location ('invalidly cued trials', 20% of trials). In a sensory control experiment we differentiated between the attentional and the sensory effects of the distracter. In areas hIP1 and hIP3, competition trials exerted a significantly stronger attentional effect than invalidity trials. Conversely, area PF in the right hemisphere showed an invalidity effect in the absence of competition effect. A third type of response was found in areas PFm and PGa which showed both an invalidity and a competition effect. The combined study of selection and reorienting using a cytoarchitectonic reference frame enabled us to resolve the wide between-study variance in temporoparietal coordinates associated with the invalidity effect. Furthermore, the study demonstrated within a same experiment a functional dissociation between reorienting and selection in parietal cortex. |
| spellingShingle | Gillebert, C Mantini, D Peeters, R Dupont, P Vandenberghe, R Cytoarchitectonic mapping of attentional selection and reorienting in parietal cortex. |
| title | Cytoarchitectonic mapping of attentional selection and reorienting in parietal cortex. |
| title_full | Cytoarchitectonic mapping of attentional selection and reorienting in parietal cortex. |
| title_fullStr | Cytoarchitectonic mapping of attentional selection and reorienting in parietal cortex. |
| title_full_unstemmed | Cytoarchitectonic mapping of attentional selection and reorienting in parietal cortex. |
| title_short | Cytoarchitectonic mapping of attentional selection and reorienting in parietal cortex. |
| title_sort | cytoarchitectonic mapping of attentional selection and reorienting in parietal cortex |
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