Watson, Derrick G. and Humphreys, Glyn W.. (1999) The magic number four and temporo-parietal damage : neurological impairments in counting targets amongst distractors. Cognitive Neuropsychology, Vol.16 (No.7). pp. 609-629. ISSN 0264-3294

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Abstract

Three experiments assessed visual search and target enumeration performance in a patient (DW) with damage to the right temporo-parietal region. DW was extremely accurate in single feature and conjunction visual search tasks. In enumeration tasks in which there were no distracters DW was also extremely accurate, showed a normal subitisation-counting function, and could use global shape as a guide to numerosity. However, enumeration of targets amongst distracters was only accurate for up to three or four items, after which performance decreased rapidly. The results are discussed in relation to recent theories of enumeration.

Item Type:	Journal Article
Subjects:	B Philosophy. Psychology. Religion > BF Psychology Q Science > QA Mathematics R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Divisions:	Faculty of Science > Psychology
Library of Congress Subject Headings (LCSH):	Parietal lobes, Number concept, Counting, Lists, Neuropsychology, Cognitive neuroscience
Journal or Publication Title:	Cognitive Neuropsychology
Publisher:	Psychology Press
ISSN:	0264-3294
Date:	October 1999
Volume:	Vol.16
Number:	No.7
Number of Pages:	21
Page Range:	pp. 609-629
Identification Number:	10.1080/026432999380663
Status:	Peer Reviewed
Publication Status:	Published
Funder:	Medical Research Council (Great Britain) (MRC), European Union (EU)
URI:	http://wrap.warwick.ac.uk/id/eprint/14082

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