[Status of the nervous system and bioelectric activity of the brain in dry cleaning plant workers exposed to tetrachloroethylene].

The studies covered 87 women and 44 men--workers of chemical laundries exposed to tetrachloroethylene (PER). About 50% of subjects were exposed, at the beginning of their employment, to trichloroethylene (TRI). In clinical examinations neuroses prevailed. The objective examination revealed disturbances of the vegetative system and symptoms of organic lesions of the central nervous system in form of encephalopathy. The EEG tests indicated paroxysmal lesions, usually with unaltered basic activities. Analysis of the rate of neurological lesions and EEG implied that the TRI-exposure at the beginning of employment did not have any significant effect on the clinical picture.