Transient Directional Disorientation as a Manifestation of Cerebral Ischemia
The authors describe 2 patients who presented with transient directional disorientation (TDD) as a manifestation of cerebral ischemia. The patients suddenly lost sense of direction in a familiar environment despite preserved ability to recognize landmarks, and recovered within a short time. Brain MR...
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| Veröffentlicht in: | European neurology 2008-01, Vol.60 (1), p.43-46 |
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| container_title | European neurology |
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| creator | Ino, Tadashi Usami, Hideo Tokumoto, Kazuki Kimura, Toru Ozawa, Kyoko Nakamura, Shigenobu |
| description | The authors describe 2 patients who presented with transient directional disorientation (TDD) as a manifestation of cerebral ischemia. The patients suddenly lost sense of direction in a familiar environment despite preserved ability to recognize landmarks, and recovered within a short time. Brain MRI revealed an ischemic lesion in the right medial occipital lobe and the corpus callosum in case 1 and in the right parieto-occipital sulcus (POS) in case 2. After ictus, fMRI study of a navigation task was performed, which demonstrated the activation of the POS unilaterally in case 1 and bilaterally in case 2. We propose that TDD of our patients is related to temporary dysfunction of bilateral POS. |
| doi_str_mv | 10.1159/000127979 |
| format | Article |
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The patients suddenly lost sense of direction in a familiar environment despite preserved ability to recognize landmarks, and recovered within a short time. Brain MRI revealed an ischemic lesion in the right medial occipital lobe and the corpus callosum in case 1 and in the right parieto-occipital sulcus (POS) in case 2. After ictus, fMRI study of a navigation task was performed, which demonstrated the activation of the POS unilaterally in case 1 and bilaterally in case 2. We propose that TDD of our patients is related to temporary dysfunction of bilateral POS.</description><identifier>ISSN: 0014-3022</identifier><identifier>EISSN: 1421-9913</identifier><identifier>DOI: 10.1159/000127979</identifier><identifier>PMID: 18437048</identifier><identifier>CODEN: EUNEAP</identifier><language>eng</language><publisher>Basel, Switzerland: S. 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The patients suddenly lost sense of direction in a familiar environment despite preserved ability to recognize landmarks, and recovered within a short time. Brain MRI revealed an ischemic lesion in the right medial occipital lobe and the corpus callosum in case 1 and in the right parieto-occipital sulcus (POS) in case 2. After ictus, fMRI study of a navigation task was performed, which demonstrated the activation of the POS unilaterally in case 1 and bilaterally in case 2. We propose that TDD of our patients is related to temporary dysfunction of bilateral POS.</abstract><cop>Basel, Switzerland</cop><pub>S. Karger AG</pub><pmid>18437048</pmid><doi>10.1159/000127979</doi><tpages>4</tpages></addata></record> |
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| subjects | Aged Awareness Brain - pathology Brain Mapping Diabetes Complications - physiopathology Diabetes Complications - psychology Humans Intracranial Hemorrhages - pathology Intracranial Hemorrhages - physiopathology Intracranial Hemorrhages - psychology Magnetic Resonance Imaging Male Orientation Original Paper Recognition (Psychology) Space Perception Spatial Behavior |
| title | Transient Directional Disorientation as a Manifestation of Cerebral Ischemia |
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