[Soft palate myoclonus and opsoclonus in disorders of cerebrovascular circulation in the vertebrobasilar system].

In 4 patients with residual cerebral circulation disorders in the vertebrobasilar vascular bed, the myoclonus of soft palate, pharynx, larynx, tongue (in 2 cases comprising opsoclonus) developed among other signs of brainstem or cerebellar lesions. Myoclonic hyperkinesia emerged after 1.5 to 4 months of the disease, not in its acute period, and was not related to second stroke. With focal neurological signs analyzed, the syndrome of the soft palate myoclonus++ plus opsoclonus appeared in connection with the lesions of upper cerebellar crus where dento olivary++ pathway and the fibers connecting the cerebellar flocculus with oculomotor nuclei run. Soft palate myoclonus++ without opsoclonus emerges with lesions of cerebellar dental nucleus and central pathway of the brainstem tegmentum.