Fractionating the binding process: neuropsychological evidence from reversed search efficiencies.

Full Abstract

The authors present neuropsychological evidence distinguishing binding between form, color, and size (cross-domain binding) and binding between form elements. They contrasted conjunctive search with difficult feature search using control participants and patients with unilateral parietal or fronto/temporal lesions. To rule out effects of task difficulty or loss of top-down guidance of search, the authors made conjunction search easier than feature search. Despite this, parietal patients were selectively impaired at detecting conjunction targets in their contralateral field. In contrast, the parietal patients performed like the other participants with form conjunctions, with form conjunctions being easier to detect than difficult feature targets. These data indicate a qualitative difference between binding in the form domain and binding across form, color, and size, consistent with theories that propose distinct binding processes in vision. (c) 2009 APA, all rights reserved.

Author information

Author/s: Humphreys, Glyn W (GW); Hodsoll, John (J); Riddoch, M Jane (MJ);

Affiliation: Behavioural Brain Sciences Centre, School of Psychology, University of Birmingham, Birmingham, United Kingdom. g.w.humphreys(-atsign-)bham.ac.uk

Grants: (Agency:Biotechnology and Biological Sciences Research Council) ; (Agency:Medical Research Council)

Journal and publication information

Publication Type: Journal Article; Research Support, Non-U.S. Gov't

Journal: Journal of experimental psychology. Human perception and performance (J Exp Psychol Hum Percept Perform), published in United States. (Language: eng)

Reference: 2009-Jun; vol 35 (issue 3) : pp 627-47

Dates: Created 2009/06/02; Completed 2009/07/20;

PMID: 19485682, status: MEDLINE (last retrieval date: 8/21/2009, IMS Date: )

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