Vertical bias in neglect: A question of time?

Cazzoli, Dario; Nyffeler, Thomas; Hess, Christian W; Müri, René M (2011). Vertical bias in neglect: A question of time? Neuropsychologia, 49(9), pp. 2369-74. Oxford: Elsevier 10.1016/j.neuropsychologia.2011.04.010

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Neglect is defined as the failure to attend and to orient to the contralesional side of space. A horizontal bias towards the right visual field is a classical finding in patients who suffered from a right-hemispheric stroke. The vertical dimension of spatial attention orienting has only sparsely been investigated so far. The aim of this study was to investigate the specificity of this vertical bias by means of a search task, which taps a more pronounced top-down attentional component. Eye movements and behavioural search performance were measured in thirteen patients with left-sided neglect after right hemispheric stroke and in thirteen age-matched controls. Concerning behavioural performance, patients found significantly less targets than healthy controls in both the upper and lower left quadrant. However, when targets were located in the lower left quadrant, patients needed more visual fixations (and therefore longer search time) to find them, suggesting a time-dependent vertical bias.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Department of Head Organs and Neurology (DKNS) > Clinic of Neurology
UniBE Contributor:	Cazzoli, Dario, Nyffeler, Thomas, Hess, Christian Walter, Müri, René Martin
ISSN:	0028-3932
Publisher:	Elsevier
Language:	English
Submitter:	Factscience Import
Date Deposited:	04 Oct 2013 14:14
Last Modified:	05 Dec 2022 14:02
Publisher DOI:	10.1016/j.neuropsychologia.2011.04.010
PubMed ID:	21530558
Web of Science ID:	000293611600009
URI:	https://boris.unibe.ch/id/eprint/3349 (FactScience: 207009)