Universität zu Köln

Vossel, Simone ORCID: 0000-0002-6351-8849, Eschenbeck, Philipp, Weiss, Peter H. ORCID: 0000-0002-5230-9080 and Fink, Gereon R. ORCID: 0000-0002-8230-1856 (2010). The neural basis of perceptual bias and response bias in the Landmark task. Neuropsychologia, 48 (13). S. 3949 - 3955. OXFORD: PERGAMON-ELSEVIER SCIENCE LTD. ISSN 1873-3514

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Abstract

Spatial neglect as a multifaceted syndrome may consist of perceptual/attentional as well as motor/intentional components. The present study investigated the lesion anatomy underlying perceptual and response bias using a manual response Landmark task (Bisiach, Ricci, Lualdi, & Colombo, 1998) in 68 patients with right-hemispheric stroke. The two differential aspects of the neglect syndrome were assessed by measuring response tendencies resulting from underestimations of the length of left line segments and from hypometric movement execution towards contralesional space, respectively. Perceptual and response bias were orthogonal components of task performance in the Landmark task. Perceptual as well as response bias both explained variance in the performance of standard paper-and-pencil neglect tests. While lesions within middle frontal, inferior parietal and parieto-occipital brain regions were related to perceptual bias, subcortical lesions within the caudate were related to response bias in the Landmark task. Our data suggest that perceptual/attentional and motor/intentional aspects of neglect are independent components of the syndrome with differential neural underpinnings in fronto-parietal and subcortical brain regions. (C) 2010 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Vossel, Simone UNSPECIFIED orcid.org/0000-0002-6351-8849 UNSPECIFIED Eschenbeck, Philipp UNSPECIFIED UNSPECIFIED UNSPECIFIED Weiss, Peter H. UNSPECIFIED orcid.org/0000-0002-5230-9080 UNSPECIFIED Fink, Gereon R. UNSPECIFIED orcid.org/0000-0002-8230-1856 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-493808
DOI:	10.1016/j.neuropsychologia.2010.09.022
Journal or Publication Title:	Neuropsychologia
Volume:	48
Number:	13
Page Range:	S. 3949 - 3955
Date:	2010
Publisher:	PERGAMON-ELSEVIER SCIENCE LTD
Place of Publication:	OXFORD
ISSN:	1873-3514
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language LINE BISECTION JUDGMENTS; RIGHT-HEMISPHERE LESIONS; DIRECTIONAL HYPOKINESIA; UNILATERAL NEGLECT; SPATIAL NEGLECT; PREMOTOR NEGLECT; PARIETAL; VERSIONS; DEFICITS; STROKE Multiple languages Behavioral Sciences; Neurosciences; Psychology, Experimental Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/49380