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Neurology 2000;54:515
© 2000 American Academy of Neurology
Brief Communications

Exploratory saccades show no direction-specific deficit in neglect

Matthias Niemeier and Hans-Otto Karnath, MD, PhD

From the Department of Cognitive Neurology, University of Tübingen, Germany.

Address correspondence and reprint requests to Dr. H.-O. Karnath, Department of Cognitive Neurology, University of Tübingen, Hoppe-Seyler-Str. 3, D-72076 Tübingen, Germany; e-mail: Karnath{at}uni-tuebingen.de

In patients with spatial neglect, contralesional reflexive saccades toward suddenly appearing targets show direction-specific deficits. We examined whether these deficits also occur during free exploration of space. Neglect patients’ voluntary eye movements showed reduced amplitudes for saccades in all directions but no direction-specific deficit. The results argue against an interpretation of spatial neglect as a general deficit to disengage attention or to program saccades in contralesional direction.

Key words: Spatial neglect—Eye movements—Attention—Parietal lobe—Brain damage—Human




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