Double dissociation between representational personal and extrapersonal neglect
نویسندگان
چکیده
منابع مشابه
Double dissociation between representational personal and extrapersonal neglect.
BACKGROUND Although perceptual and representational neglect are frequently associated, the demonstration of a double dissociation between both neglect forms suggests that both rely on different central mechanisms. In addition, perceptual neglect can be selectively observed within personal space or extrapersonal space. However, it is not known whether the latter dissociation also exists in repre...
متن کاملPersonal and extrapersonal space: a case of neglect dissociation.
Dissociation between personal and extrapersonal neglect has rarely been observed in man. In this study we present a case of severe personal neglect in the absence of a deficit for extrapersonal space. An extensive neuropsychological assessment demonstrates the absence of cognitive impairments in visuo-spatial processing and confirms the selective presence of a severe representational deficit of...
متن کاملPersonal versus extrapersonal neglect: a group study of their dissociation using a reliable clinical test.
The validation of a simple quantitative clinical test of personal neglect is described in this study of 17 right brain damaged CVA patients with extrapersonal neglect, 14 without unilateral extrapersonal neglect, 13 left brain damaged CVA patients and 17 age-matched controls. The test had a high reliability and clearly differentiated neglect patients from all other groups. Furthermore the test ...
متن کاملNeural bases of personal and extrapersonal neglect in humans.
Human awareness of left space may be disrupted by cerebral lesions to the right hemisphere (hemispatial neglect). Current knowledge on the anatomical bases of this complex syndrome is based on the results of group studies that investigated primarily the best known aspect of the syndrome, which is visual neglect for near extrapersonal (or peripersonal) space. However, another component-neglect f...
متن کاملNeglect in vision and visual imagery: a double dissociation.
We report two patients with right hemisphere lesions who demonstrate a double dissociation on visual imagery and visual perceptual tasks. One (M.N.) performed normally on a variety of standard tests for neglects as well as on measures of visual attention known to be sensitive to the presence of neglect, yet failed to report items from the left side of an imagined scene. In contrast, the other (...
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ژورنال
عنوان ژورنال: Neurology
سال: 2006
ISSN: 0028-3878,1526-632X
DOI: 10.1212/01.wnl.0000210440.49932.e7