. Author manuscript; available in PMC: 2013 Oct 1.

Published in final edited form as: Sleep Med Rev. 2011 Dec 14;16(5):415–429. doi: 10.1016/j.smrv.2011.08.004

Table 5.

Visual methods quantifying duration of muscle activity

	EMG Channels used for RBD	Muscle Activity Scoring Definition	Additional Definitions

Eisensehr et al.⁵⁶	Mental, Submental, both anterior tibialis, both musculibrachioradiales (Chin and extremities)	Short-lasting muscle activity: if at least 10 short lasting muscle activities (an increase in muscle activity of less than 0.5-sec) occurred during an epoch	Muscle activity: EMG amplitude increase of ≥50% compared to the immediately preceding atonic EMG baseline
Eisensehr et al.⁵⁶		Long-lasting muscle activity: if persistently increased muscle activity (each at least 0.5-sec) lasted at least 1 second in an epoch

Knudsen, Gammeltoft, & Jennum⁵⁷	Anterior tibialis (Left)	Short muscle activation: 0.1-0.49-sec	Muscle Activity: an amplitude greater than threshold that is x2 of baseline EMG activity
Knudsen, Gammeltoft, & Jennum⁵⁷	Anterior tibialis (Left)	Long muscle activation: 0.5-15.0-sec	Threshold muscle activity: dynamic computerized calculation of a smoothed version of baseline EMG activity before the occurrence of a given muscle activity

RBD, REM sleep behavior disorder; EMG, electromyography;