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. 2011 Mar 17;6(3):e17696. doi: 10.1371/journal.pone.0017696

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Rhea et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Recurrence plot (A) and entropy histogram (B) of a sine wave collected at 166 Hz with no noise added. Recurrence plot (C) and entropy histogram (D) of a sine wave collected at 166 Hz with noise added (scaling factor (µ) = 200).