par Demeurisse, Guy 
;Hublet, Claude ;Colson, Cathérine;Paternot, Jacques;Serniclaes, Willy
Référence Neuropsychologia, 35, 5, page (731-735)
Publication Publié, 1997-04
;Hublet, Claude ;Colson, Cathérine;Paternot, Jacques;Serniclaes, Willy Référence Neuropsychologia, 35, 5, page (731-735)
Publication Publié, 1997-04
Article révisé par les pairs
| Résumé : | The pathophysiology of neuropsychological disorders due to right deep-seated hemispheric lesions remains a debated point. We undertook this study to check the hypothesis according to which remote cortical dysfunction could be responsible for the occurrence of neglect. Twenty-eight patients presenting with a right-sided subcortical stroke were studied. A neuropsychological battery of tests suitable for assessment of possible visuo-spatial neglect was performed as well as HMPAO SPECT. Neglect was observed in 15 cases out of 28. The lesion's site (at CT and/or MRI) did not allow discrimination between patients without neglect and patients with neglect. The latter however could be distinguished from the former by the presence of a remote decrease in cortical blood flow in the right temporo-parietal region. By suggesting that cortical involvement is necessary for the occurrence of neglect, the results were interpreted according to a network approach in which subcortical neglect is attributed to a cortical deprivation from afferent input in the posterior part of the brain. |
