Long latency muscle responses in cerebellar diseases.

Long latency reflexes were measured from the hand muscles of 27 patients suffering from different cerebellar diseases (12 diffuse cerebellar atrophies, 7 cerebellar hemispheric infarcts, 8 Friedreich's disease) and from 45 controls after electrical stimulus of the median nerve at the wrist. The M3 response (latency about 70 ms) was increased in about 50% of cerebellar atrophy cases and occasionally (10 of 12 cases) separated from the M2 response (50 ms). M3 was sometimes (3/7) increased and the M2-3 complex was prolonged ipsilaterally in cases of cerebellar infarcts.

[Acute cerebellar encephalitis in adulthood].

Two cases of rare adult cerebellar encephalitis are reported presenting the distinguishing features of acute onset of cerebellar ataxia, distinct ocular oscillations (opsoclonus, ocular flutter, macro square wave jerks) and generalized myoclonic jerks. The EOG-analysis of the cerebellar oculomotor disorder is emphasized. The course is usually benign ("benign encephalitis") differing from the childhood form only in age of onset.