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Spatial Working Memory in Asymptomatic HIV-Infected Subjects

Received June 22, 1998; revised January 22, 1999; accepted February 1, 1999. From the Psychiatric Branch, Institute of Biomedical Sciences, and the Infectious Diseases Department, Centro San Luigi, University of Milan Medical School, Milan, Italy. Address correspondence to Dr. Grassi, Dipartimento di Psichiatria, Ospedale San Paolo, via A. di Rudinì 8, 20142 Milano, Italy; e-mail: scarones{at}imiucca.csi.unimi.it

Many clinical and research findings converge to indicate that frontal lobe, basal ganglia, and related neuronal connections are primarily involved in human immunodeficiency virus (HIV) infection; frontal lobe, mainly the prefrontal cortex, has a specialized role in working memory processes. This study focused on neuropsychological evaluation of the spatial component of working memory in a sample of 34 asymptomatic HIV-infected subjects as compared with 34 age- and sex-matched seronegative control subjects. A computer-administered test assessing spatial working memory was used for the neuropsychological evaluation. The findings did not show any spatial working memory impairment during the asymptomatic phase of HIV infection.

Key Words: Memory • AIDS/HIV • Neuropsychology

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