Double dissociations between neglect tests: possible relation to lesion site.
In 20 patients who had suffered a first right hemisphere stroke, we examined the prevalence of double dissociations between the results of a star cancellation and a line bisection test. Both are common methods to assess spatial hemineglect. Within the group of neglect patients, we found no significant correlation between the two tasks. Furthermore, 5 patients with impaired performance on one of the tests were within the normal range on the other one. In agreement with experimental studies, we argue that spatial hemineglect is not a unitary syndrome. Furthermore, the findings in one of our patients are compatible with the view that an isolated deficit on cancellation tasks might follow from a lesion in the right anterior cingulate gyrus.
Schubert
F
F
II Department for Neurology, Neurological Hospital Rosenhügel, LBI für Epilepsie und Neuromuskuläre Erkrankungen, University of Vienna, Austria.
Spatt
J
J
D000328:Adult; D004292:Dominance, Cerebral; D005260:Female; D005625:Frontal Lobe / Q000473:pathology*; D006179:Gyrus Cinguli / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009483:Neuropsychological Tests; D010468:Perceptual Disorders / Q000175:diagnosis / Q000209:etiology*; D015995:Prevalence; D020521:Stroke / Q000150:complications* / Q000175:diagnosis* / Q000473:pathology / Q000523:psychology; D013577:Syndrome