Seeing without the Occipito-Parietal Cortex: Simultagnosia as a Shrinkage of the Attentional Visual Field
Following bi-parietal lesions patient AT showed a severe inability to relocate her attention within a visual field which perimetry proved to be near-normal. An experimental approach with tasks testing visuo-spatial attention demonstrated a shrinkage of A.T.’s attentional visual field. With her visua...
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| Format: | Article |
| Language: | English |
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Wiley
2004-01-01
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| Series: | Behavioural Neurology |
| Online Access: | http://dx.doi.org/10.1155/2004/836830 |
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| _version_ | 1832560182687694848 |
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| author | François Michel Marie-Anne Henaff |
| author_facet | François Michel Marie-Anne Henaff |
| author_sort | François Michel |
| collection | DOAJ |
| description | Following bi-parietal lesions patient AT showed a severe inability to relocate her attention within a visual field which perimetry proved to be near-normal. An experimental approach with tasks testing visuo-spatial attention demonstrated a shrinkage of A.T.’s attentional visual field. With her visual attention narrowed to a kind of functional tunnel vision, the patient exhibited simultanagnosia (Wolpert, 1924), a symptom previously described in 1909 by Balint under the label of Psychic paralysis of “Gaze”. In striking contrast AT showed an efficient and effortless perception of complex natural scenes, which, according to recent work in normal subjects, necessitate few if any attentional resources. |
| format | Article |
| id | doaj-art-5c017273c73b426b8b536ad0b13705ae |
| institution | Kabale University |
| issn | 0953-4180 1875-8584 |
| language | English |
| publishDate | 2004-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Behavioural Neurology |
| spelling | doaj-art-5c017273c73b426b8b536ad0b13705ae2025-02-03T01:28:10ZengWileyBehavioural Neurology0953-41801875-85842004-01-01151-231310.1155/2004/836830Seeing without the Occipito-Parietal Cortex: Simultagnosia as a Shrinkage of the Attentional Visual FieldFrançois Michel0Marie-Anne Henaff1Institut des Sciences Cognitives, CNRS. Lyon, FranceU 280 INSERM, Lyon, FranceFollowing bi-parietal lesions patient AT showed a severe inability to relocate her attention within a visual field which perimetry proved to be near-normal. An experimental approach with tasks testing visuo-spatial attention demonstrated a shrinkage of A.T.’s attentional visual field. With her visual attention narrowed to a kind of functional tunnel vision, the patient exhibited simultanagnosia (Wolpert, 1924), a symptom previously described in 1909 by Balint under the label of Psychic paralysis of “Gaze”. In striking contrast AT showed an efficient and effortless perception of complex natural scenes, which, according to recent work in normal subjects, necessitate few if any attentional resources.http://dx.doi.org/10.1155/2004/836830 |
| spellingShingle | François Michel Marie-Anne Henaff Seeing without the Occipito-Parietal Cortex: Simultagnosia as a Shrinkage of the Attentional Visual Field Behavioural Neurology |
| title | Seeing without the Occipito-Parietal Cortex: Simultagnosia as a Shrinkage of the Attentional Visual Field |
| title_full | Seeing without the Occipito-Parietal Cortex: Simultagnosia as a Shrinkage of the Attentional Visual Field |
| title_fullStr | Seeing without the Occipito-Parietal Cortex: Simultagnosia as a Shrinkage of the Attentional Visual Field |
| title_full_unstemmed | Seeing without the Occipito-Parietal Cortex: Simultagnosia as a Shrinkage of the Attentional Visual Field |
| title_short | Seeing without the Occipito-Parietal Cortex: Simultagnosia as a Shrinkage of the Attentional Visual Field |
| title_sort | seeing without the occipito parietal cortex simultagnosia as a shrinkage of the attentional visual field |
| url | http://dx.doi.org/10.1155/2004/836830 |
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