{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,5]],"date-time":"2026-08-05T00:06:42Z","timestamp":1785888402808,"version":"3.56.0"},"reference-count":32,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2017,3,21]],"date-time":"2017-03-21T00:00:00Z","timestamp":1490054400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Entropy"],"abstract":"<jats:p>Over recent years, some new variants of Permutation entropy have been introduced and applied to EEG analysis, including a conditional variant and variants using some additional metric information or being based on entropies that are different from the Shannon entropy. In some situations, it is not completely clear what kind of information the new measures and their algorithmic implementations provide. We discuss the new developments and illustrate them for EEG data.<\/jats:p>","DOI":"10.3390\/e19030134","type":"journal-article","created":{"date-parts":[[2017,3,21]],"date-time":"2017-03-21T12:22:22Z","timestamp":1490098942000},"page":"134","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":55,"title":["Permutation Entropy: New Ideas and Challenges"],"prefix":"10.3390","volume":"19","author":[{"given":"Karsten","family":"Keller","sequence":"first","affiliation":[{"name":"Institute of Mathematics, University of L\u00fcbeck, L\u00fcbeck D-23562, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Teresa","family":"Mangold","sequence":"additional","affiliation":[{"name":"Institute of Mathematics, University of L\u00fcbeck, L\u00fcbeck D-23562, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Inga","family":"Stolz","sequence":"additional","affiliation":[{"name":"Institute of Mathematics, University of L\u00fcbeck, L\u00fcbeck D-23562, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jenna","family":"Werner","sequence":"additional","affiliation":[{"name":"Institute of Mathematics, University of L\u00fcbeck, L\u00fcbeck D-23562, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2017,3,21]]},"reference":[{"key":"ref_1","first-page":"174102","article-title":"Permutation entropy\u2014A natural complexity measure for time series","volume":"88","author":"Bandt","year":"2002","journal-title":"Phys. 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