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. Author manuscript; available in PMC: 2013 Mar 15.
Published in final edited form as: J Neurosci Methods. 2011 Dec 9;204(2):276–287. doi: 10.1016/j.jneumeth.2011.12.001

Figure 2.

Figure 2

Example signals obtained from the radar sensor for A. wakefulness (W) D. non-rapid eye movement sleep (NREM), and G. rapid eye movement sleep (REM). Corresponding FFTs (B, E, H) and autocorrelations (C, F, I) are shown for W, NREM, and REM, respectively.