[Effect of dehydrobenzperidol (DHB) on cortical and thalamic somatosensory evoked potentials in patients with muscle dystonia].

Investigations of somatosensory evoked potentials in patients with muscular dystonia meet with difficulties due to abnormal muscle tone and dyskinesia producing myogenic artifacts deforming potentials recorded after their evoking. For obtaining better conditions for recording of somatosensory evoked potentials single dose of DHB was used. Somatosensory evoked potentials were recorded before and after operations and during stereotactic thalamotomy of the complex of the VL nucleus in the thalamus. The authors report the results of investigations in the above mentioned three periods of treatment in hospital. The results suggest the hypothesis that DHB affects the cerebellofugal transmission organizing the proper muscle tone.