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Frontal Lobe Dysfunction in Unilateral Lenticulostriate InfarctsProminent Role of Cortical Lesions
Olivier Godefroy, MD;
Marc Rousseaux, MD, PhD;
Didier Leys, MD;
Alain Destée, MD;
Philip Scheltens, MD;
Jean Pierre Pruvo, MD
Arch Neurol. 1992;49(12):1285-1289.
Abstract
• Most studies on frontal lobe dysfunction (FLD) in patients with striatal lesions did not consider possible associated cortical lesions not seen on computed tomographic scans. To determine the possible role of such cortical lesions, we assessed FLD in 10 patients with unilateral lenticulostriate infarct on computed tomographic scans. Magnetic resonance imaging revealed an associated cortical infarct not seen on computed tomographic scans in four patients. Using a battery of neuropsychological tests sensitive to FLD, we found that (1) the crossed tapping test was the only FLD test significantly disturbed in patients with pure unilateral lenticulostriate infarcts, (2) FLD was only present in patients with associated cortical infarct, and (3) caudate lesions only account for the number of echopraxic errors in the crossed tapping test. We conclude that unilateral isolated lenticulostriate infarcts might not lead to FLD, even though they may disturb the development of strategies involved in motor procedural learning.
Author Affiliations
From the Departments of Neurology (Drs Godefroy, Leys, and Destée), Neurological Rehabilitation (Dr Rousseaux), and Neuroradiology (Dr Pruvo), University Hospital, Lille, France; and Department of Neurology, Free University Hospital, Amsterdam, the Netherlands (Dr Scheltens).
Footnotes
Accepted for publication May 12, 1992.
Reprint requests to Service de Neurologie B, Hôpital B, F-59037 Lille, France (Dr Godefroy).
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