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Pseudo-neglect in Huntington's disease correlates with decreased angular gyrus density

Ho, A.K., Nestor, P.J., Williams, G.B., Bradshaw, J.L., Sahakian, B.J., Robbins, T.W. and Barker, R.A. (2004) Pseudo-neglect in Huntington's disease correlates with decreased angular gyrus density. Neuroreport, 15 (6). pp. 1061-1064. ISSN 1473-558X

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Visuospatial attentional bias was examined in Huntington's disease (HID) patients with mild disease, asymptomatic gene-positive patients and controls. No group differences were found on the grey scales task (which is a non-motor task of visuospatial attentional bias), although patients' trinucleotide (CAG) repeat length correlated with increasing leftward bias. On the line bisection task, symptomatic patients made significantly larger leftward bisection errors relative to controls, who showed the normal slight degree of leftward error (pseudo-neglect). The asymptomatic group showed a trend for greater leftward error than controls. A subset of participants went on to have structural MRI, which showed a correlation between increased leftward error on the line bisection task and reduced density in the angular gyrus area (BA39) bilaterally. This finding is consistent with recent literature suggesting a critical role for the angular gyrus in the lateralization of visuospatial attention.

Item Type:Article
Divisions:Life Sciences > School of Psychology and Clinical Language Sciences
ID Code:14013
Uncontrolled Keywords:angular gyrus, attention, Grey scales, Huntington's disease, line bisection, visual , UNILATERAL NEGLECT, SPATIAL NEGLECT, ATTENTION, PSEUDONEGLECT, PERFORMANCE, DISORDER, CHILDREN, ANATOMY, LESION, VOLUME
Additional Information:DOI not working replaced with URL.
Publisher:Lippincott Williams & Wilkins

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