The current findings did not correspond to the studies of many researchers, who stated that the exposure to mixed solvents caused neurophysiological and psychological dis- orders [41–44]. However, additional assessments should be performed regarding the type of solvent and the severity of exposure. Also, in the present study, the number of workers continuously exposed to xylene and toluene was insufficient since the average work duration (years) of the workers was only 6.9 (6.0) years.