Visual neglect in horizontal and radial space: When left goes right, proximal goes distal

Wilkinson, D.T. and Sakel, Mohamed (2011) Visual neglect in horizontal and radial space: When left goes right, proximal goes distal. Journal of the International Neuropsychological Society, 17 (5). pp. 943-947. ISSN 1355-6177 . (Full text available)

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http://dx.doi.org/10.1017/S1355617711000713

Abstract

Hemi-spatial neglect can manifest in both the horizontal and radial spatial plane. However, debate exists over how closely the two forms of neglect relate. Here we compared the ability of a neglect patient to bisect stimuli in horizontal vs. radial orientation. When oriented horizontally, single lines were mis-bisected to the right, yet when surrounded by visual distracters, the lines were mis-bisected to the left. A leftward bias also emerged when horizontally-aligned strings of symbols were bisected. Unexpectedly, an analogous pattern of bias appeared when the stimuli were bisected in radial orientation; stimuli that induced a leftward bias now induced a proximal bias, while stimuli that induced a rightward bias induced a distal bias. Spontaneous reversals in radial bias have not been previously reported, and given that they were coupled with the horizontal reversals, imply that the spatial boundaries of horizontal and radial neglect are strongly constrained by common stimulus configurations.

Item Type: Article
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Divisions: Faculties > Social Sciences > School of Psychology
Depositing User: David Wilkinson
Date Deposited: 28 Apr 2011 16:27
Last Modified: 20 Dec 2013 17:23
Resource URI: http://kar.kent.ac.uk/id/eprint/27743 (The current URI for this page, for reference purposes)
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