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Visual neglect after right posterior cerebral artery infarction

Bird, C.M.; Malhotra, P.; Parton, A.; Coulthard, E.; Rushworth, M.F.; Husain, M.; (2006) Visual neglect after right posterior cerebral artery infarction. Journal of Neurology, Neurosurgery and Psychiatry , 77 (9) pp. 1008-1012. 10.1136/jnnp.2006.094417. Green open access

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Abstract

OBJECTIVES: To investigate the characteristics and neuroanatomical correlates of visual neglect after right-sided posterior cerebral artery (PCA) infarction. METHODS: 15 patients with acute PCA strokes were screened for the presence of neglect on a comprehensive battery of cognitive tests. Extra tests of visual perception were also carried out on six patients. To establish which areas were critically associated with neglect, the lesions of patients with and without neglect were compared. RESULTS: Neglect of varying severity was documented in 8 patients. In addition, higher-order visual perception was impaired in 5 of the 6 patients. Neglect was critically associated with damage to an area of white matter in the occipital lobe corresponding to a white matter tract connecting the parahippocampal gyrus with the angular gyrus of the parietal lobe. Lesions of the thalamus or splenium of the corpus callosum did not appear necessary or sufficient to cause neglect, but may mediate its severity in these patients. CONCLUSIONS: PCA stroke can result in visual neglect. Interruption of the white matter fibres connecting the parahippocampal gyrus to the angular gyrus may be important in determining whether a patient will manifest neglect.

Type: Article
Title: Visual neglect after right posterior cerebral artery infarction
Open access status: An open access version is available from UCL Discovery
DOI: 10.1136/jnnp.2006.094417
Publisher version: http://dx.doi.org/doi:10.1136/jnnp.2006.094417
Language: English
Additional information: Copyright BMJ Publishing Group.
UCL classification: UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > Div of Psychology and Lang Sciences > Institute of Cognitive Neuroscience
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Brain Repair and Rehabilitation
URI: https://discovery.ucl.ac.uk/id/eprint/2544
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