Neurobehavioral functioning was tested in 34 asymptomatic HIV-
seropositive and 43 HIV-seronegative male homosexual subjects without
substance abuse and CNS disorders. The HIV-positive subjects exhibited mild
motor slowing compared to the seronegative subjects. These differences
remained after controlling for potential cofactors. Early neurobehavioral
impairment in HIV infection seems limited to subclinical motor deficits and
attributable to HIV rather than possible confounding factors.