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Uptodate Reference Title
Sleep-related rhythmic movement disorder (head banging) on polysomnography
Sleep-related rhythmic movement disorder (head banging) on polysomnography
This figure shows a PSG of sleep-related rhythmic movement disorder, which includes head banging, body rocking, and head rolling. In this PSG, the rhythmic movement is head rolling. The frequency range for rhythmic movement disorder is 0.5 to 2.0 Hz with at least four defined movements representing a "cluster" of rhythmic movements (dashed boxes).