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. Author manuscript; available in PMC: 2008 Mar 8.
Published in final edited form as: IEEE Trans Inf Technol Biomed. 2006 Apr;10(2):293–301. doi: 10.1109/TITB.2005.859878

Fig. 1.

Fig. 1

Minimal configuration for sleep recording. Top: placement of E1, E2, A1 and A2 for detection of eye movements, and recording of EMG from mental and submental muscle areas. Down: placement of C3, C4, A1, and A2 for EEG recording [10].