Attention and Feature Integration: Illusory conjunctions in a patient with a parietal lobe lesion

Asher Cohen, Robert D. Rafal, Robert D. Rafal

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Abstract

This article explores the relation between spatial attention and feature integration in a parietal patient. When the patient had to focus her attention in the middle of the visual field by performing a digit task, she committed a much larger number of illusory conjunctions on the side contralateral to her lesion than on the side ipsilateral to her lesion. When the digit task was eliminated, thereby relaxing the requirement of focused attention, the number of illusory conjunctions on the contralateral side was dramatically reduced. These results indicate that the spatial attention mechanism plays a central role in feature integration.

Original languageAmerican English
Pages (from-to)106-110
Number of pages5
JournalPsychological Science
Volume2
Issue number2
DOIs
StatePublished - Mar 1991
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by NSF grant (BNS-9012471) to Asher Cohen, by the Office of Naval Research (N000I4-87-K-0279) to Steve Keele and Richard Ivry, and by NIH grant ROI NH 41544 to Robert Rafal. We are grateful to Rich Ivry and Steve Keele for valuable help at various stages of this work. We thank W.K. Estes and an anonymous reviewer for helpful comments on an earlier draft of this manuscript.

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