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. Author manuscript; available in PMC: 2017 Feb 1.
Published in final edited form as: J Neurosci Methods. 2015 Nov 28;259:101–114. doi: 10.1016/j.jneumeth.2015.11.007

Fig. 6.

Fig. 6

Histogram for the time between pulses (subject 4 nap data). The mean period is 1.06 seconds (0.935 Hz) and the standard deviation is 0.186 seconds (0.138 Hz).