Fig. 1From: Spinocerebellar ataxia type 31 associated with REM sleep behavior disorder: a case reportThe polysomnographic finding in this case. Excessive phasic/transient muscle activity confined to chin and anterior tibialis muscles (tenth and eleventh channels) was observed during rapid eye movement sleep. OC, oculogram; EEG, electroencephalogram; EMG, electromyogram, Ant. Tib., anterior tibial muscleBack to article page