The fronto-parietal network and top-down modulation of perceptual grouping.
We examined the role of the fronto-parietal cortex in top-down modulation of perceptual grouping by proximity, collinearity, and similarity, by recording event related brain potentials from two patients with fronto-parietal lesions and eight controls. We found that grouping by proximity and collinea...
| Egile Nagusiak: | , |
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| Formatua: | Journal article |
| Hizkuntza: | English |
| Argitaratua: |
2007
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| _version_ | 1826304046039826432 |
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| author | Han, S Humphreys, G |
| author_facet | Han, S Humphreys, G |
| author_sort | Han, S |
| collection | OXFORD |
| description | We examined the role of the fronto-parietal cortex in top-down modulation of perceptual grouping by proximity, collinearity, and similarity, by recording event related brain potentials from two patients with fronto-parietal lesions and eight controls. We found that grouping by proximity and collinearity in the controls was indexed by short-latency activities over the medial occipital cortex and long-latency activities over the occipito-parietal areas. For the patients, however, both the short- and long-latency activities were eliminated or weakened. The results suggest that the fronto-parietal network is involved in facilitation of both the early and late grouping processes in the human brain. |
| first_indexed | 2024-03-07T06:11:53Z |
| format | Journal article |
| id | oxford-uuid:efca3e7d-3bff-41ce-90f8-d38a52c4da7f |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:11:53Z |
| publishDate | 2007 |
| record_format | dspace |
| spelling | oxford-uuid:efca3e7d-3bff-41ce-90f8-d38a52c4da7f2022-03-27T11:42:48ZThe fronto-parietal network and top-down modulation of perceptual grouping.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:efca3e7d-3bff-41ce-90f8-d38a52c4da7fEnglishSymplectic Elements at Oxford2007Han, SHumphreys, GWe examined the role of the fronto-parietal cortex in top-down modulation of perceptual grouping by proximity, collinearity, and similarity, by recording event related brain potentials from two patients with fronto-parietal lesions and eight controls. We found that grouping by proximity and collinearity in the controls was indexed by short-latency activities over the medial occipital cortex and long-latency activities over the occipito-parietal areas. For the patients, however, both the short- and long-latency activities were eliminated or weakened. The results suggest that the fronto-parietal network is involved in facilitation of both the early and late grouping processes in the human brain. |
| spellingShingle | Han, S Humphreys, G The fronto-parietal network and top-down modulation of perceptual grouping. |
| title | The fronto-parietal network and top-down modulation of perceptual grouping. |
| title_full | The fronto-parietal network and top-down modulation of perceptual grouping. |
| title_fullStr | The fronto-parietal network and top-down modulation of perceptual grouping. |
| title_full_unstemmed | The fronto-parietal network and top-down modulation of perceptual grouping. |
| title_short | The fronto-parietal network and top-down modulation of perceptual grouping. |
| title_sort | fronto parietal network and top down modulation of perceptual grouping |
| work_keys_str_mv | AT hans thefrontoparietalnetworkandtopdownmodulationofperceptualgrouping AT humphreysg thefrontoparietalnetworkandtopdownmodulationofperceptualgrouping AT hans frontoparietalnetworkandtopdownmodulationofperceptualgrouping AT humphreysg frontoparietalnetworkandtopdownmodulationofperceptualgrouping |