An evaluation of the effects of chronic mercury exposures on EMG and psychomotor functions.
Chaffin-DB; Dinman-BD; Miller-JM; Smith-RG; Zontine-DH
NIOSH 1973 Jan; :1-204
Report on neurological and psychomotor skill assessments in 142 industrial workers, 77 of whom were routinely exposed to inorganic mercury vapor, from four different plants. None of the workers showed symptoms at the time of the study. The chief health status indicators employed were forearm tremor, electromyography (EMG) and discrete poisoning eye-hand coordination, as well as psychomotor tests and neurological examinations. The following specific changes were significantly correlated with high blood and urine mercury burdens: increase in mean frequency of forearm tremor, increase in surface EMG bandwidth, more erratic discrete positioning hand movements. These returned to more normal levels after workers were put at a workpost with a lower degree of exposure. The value of such neurological and psychomotor tests for routine testing is stressed.
Electrophysiology; Psychomotor-functions; Physiological-measurements; Mercury-poisoning; Metal-poisoning; Testing-methods
Final Contract Report
NTIS Accession No.
National Institute for Occupational Safety and Health
University of Michigan