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. 2016 May 15;12(5):735–746. doi: 10.5664/jcsm.5808

Figure 1. Scatterplots of the relation between values obtained with use of frontal versus central derivations for different sleep variables.

Figure 1

ICC, intraclass correlation coefficient; N1 to N3, stages non-REM 1 to 3; REM, rapid eye movement sleep; TST, total sleep time; W, stage awake.