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Steven Z. Rapcsak, MD; Mieke Verfaellie, PhD; Shepherd Fleet, MD; Kenneth M. Heilman, MD

Arch Neurol. 1989;46(2):178-182.

Abstract
• To determine how increasing demands on visual selective attention affect the symptoms of hemispatial neglect, we studied patients with right hemispheric lesions on a cancellation task requiring various degrees of focused attention. In the target only condition, the patients were to cancel all stimuli. In the targetnontarget condition, discriminating targets from nontargets did not require close scrutiny, whereas in the target-foil condition, discriminating targets from foils required greater attention to detail. Our findings indicate that increasing demands on visual selective attention adversely affect both exploration of the left side of space and visual discrimination.

Author Affiliations
From the Department of Neurology, University of Florida College of Medicine and the Veterans Administration Medical Center, Gainesville. Dr Rapcsak is now with the University of Arizona, Tucson.

Footnotes
Accepted for publication June 20, 1988.

Read in part before the 38th Annual Meeting of the American Academy of Neurology, New Orleans, May 1, 1986.

Reprints not available.

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