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This research suggests four different measurements; intrinsic phase-locked value, intrinsic coherence, intrinsic synchronization likelihood, and intrinsic visibility graph similarity that quantifies the synchronization level and complexity in electroencephalography (EEG) signals. This intrinsic synchronization is achieved by utilizing Multivariate Empirical Mode Decomposition (MEMD), a data-driven method that resolves nonlinear and nonstationary data into their intrinsic mode functions. Our intrinsic technique in this study demonstrates that MEMD-based synchronization analysis gives us much more detailed knowledge rather than utilizing the synchronization method alone. Furthermore, the nonlinear synchronization method presents more consistent results considering OCD heterogeneity. Statistical evaluation using sample [Formula: see text]-test and [Formula: see text]-test has shown the significance of such new methodology. <\/jats:p>","DOI":"10.1142\/s012906572050046x","type":"journal-article","created":{"date-parts":[[2020,9,9]],"date-time":"2020-09-09T12:39:00Z","timestamp":1599655140000},"page":"2050046","source":"Crossref","is-referenced-by-count":9,"title":["Intrinsic Synchronization Analysis of Brain Activity in Obsessive\u2013compulsive Disorders"],"prefix":"10.1142","volume":"30","author":[{"given":"Pinar","family":"Ozel","sequence":"first","affiliation":[{"name":"Department of Biomedical Engineering, Nevsehir Haci Bektas Veli University, Nevsehir, Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ali","family":"Karaca","sequence":"additional","affiliation":[{"name":"Department of Electrical and Electronics Engineering, Inonu University, Malatya, Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ali","family":"Olamat","sequence":"additional","affiliation":[{"name":"Department of Biomedical Engineering, Istanbul University-Cerrahpasa, Istanbul, Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Aydin","family":"Akan","sequence":"additional","affiliation":[{"name":"Department of Electrical and Electronics Engineering, Izmir University of Economics, Izmir"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mehmet Akif","family":"Ozcoban","sequence":"additional","affiliation":[{"name":"Department of Electronic and Automation in Junior Technical College, Gaziantep University, Gaziantep, Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Oguz","family":"Tan","sequence":"additional","affiliation":[{"name":"Neuropsychiatry Health, Practice and Research Centre, Uskudar University, Istanbul, Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"219","published-online":{"date-parts":[[2020,8,19]]},"reference":[{"key":"S012906572050046XBIB001","doi-asserted-by":"publisher","DOI":"10.1142\/S0129065718500260"},{"key":"S012906572050046XBIB002","doi-asserted-by":"publisher","DOI":"10.1007\/s11517-017-1689-8"},{"key":"S012906572050046XBIB003","doi-asserted-by":"publisher","DOI":"10.1016\/j.janxdis.2018.11.001"},{"key":"S012906572050046XBIB004","doi-asserted-by":"publisher","DOI":"10.1098\/rspa.2009.0502"},{"key":"S012906572050046XBIB005","doi-asserted-by":"publisher","DOI":"10.1142\/S0129065718500454"},{"key":"S012906572050046XBIB006","doi-asserted-by":"publisher","DOI":"10.1142\/S0129065718500247"},{"key":"S012906572050046XBIB007","doi-asserted-by":"publisher","DOI":"10.1152\/jn.00977.2007"},{"key":"S012906572050046XBIB008","doi-asserted-by":"publisher","DOI":"10.1097\/00004691-200212000-00010"},{"key":"S012906572050046XBIB009","doi-asserted-by":"publisher","DOI":"10.1016\/j.clinph.2004.04.029"},{"key":"S012906572050046XBIB010","doi-asserted-by":"publisher","DOI":"10.1016\/j.neurobiolaging.2007.05.007"},{"key":"S012906572050046XBIB011","doi-asserted-by":"publisher","DOI":"10.1016\/j.brainresbull.2005.10.013"},{"key":"S012906572050046XBIB013","doi-asserted-by":"publisher","DOI":"10.1016\/S1388-2457(01)00513-2"},{"key":"S012906572050046XBIB014","doi-asserted-by":"publisher","DOI":"10.1103\/PhysRevE.84.021929"},{"key":"S012906572050046XBIB015","doi-asserted-by":"publisher","DOI":"10.1016\/S0167-8760(99)00038-0"},{"key":"S012906572050046XBIB016","doi-asserted-by":"publisher","DOI":"10.1038\/17120"},{"key":"S012906572050046XBIB017","doi-asserted-by":"publisher","DOI":"10.1038\/35067550"},{"key":"S012906572050046XBIB018","doi-asserted-by":"publisher","DOI":"10.1002\/(SICI)1097-0193(1999)8:4<194::AID-HBM4>3.0.CO;2-C"},{"key":"S012906572050046XBIB019","doi-asserted-by":"publisher","DOI":"10.1142\/S0218127400001560"},{"key":"S012906572050046XBIB020","doi-asserted-by":"publisher","DOI":"10.1109\/81.633876"},{"issue":"4","key":"S012906572050046XBIB021","first-page":"53","volume":"1","author":"David O.","year":"2002","journal-title":"Int. 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