A group of 98 workers, 65 exposed to organic solvents and 33 unexposed, were examined to assess possible neurotoxic signs and symptoms related to solvent exposure. The exposed workers had more symptoms of intellectual impairment, poorer performances in psychological tests, and more often showed signs of cerebral asthenopia. Solvent exposure and neurotoxic signs and symptoms mildly correlated in the study group. English abridgement of <i>AATA</i> <b>20-1351</b>. -- AATA