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Brief leg movements on polysomnography

Brief leg movements on polysomnography
This figure shows a 30-second epoch of a PSG demonstrating 0.2 to 0.3 second leg movements in the left leg EMG that do not qualify as PLMS, as they are shorter than the minimum 0.5 second duration criteria.
PSG: polysomnography; PLMS: periodic limb movements of sleep; EOG: electrooculography; EEG: electroencephalography; EMG: electromyography; ECG: electrocardiography.
Illustrated by Seulah Rebecca Choi. Reproduced with permission.
Graphic 104843 Version 3.0