{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,4]],"date-time":"2025-12-04T09:53:48Z","timestamp":1764842028531,"version":"build-2065373602"},"reference-count":49,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2018,1,12]],"date-time":"2018-01-12T00:00:00Z","timestamp":1515715200000},"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>Atrial fibrillation (AF) is already the most commonly occurring arrhythmia. Catheter pulmonary vein ablation has emerged as a treatment that is able to make the arrhythmia disappear; nevertheless, recurrence to arrhythmia is very frequent. In this study, it is proposed to perform an analysis of the electrical signals recorded from bipolar catheters at three locations, pulmonary veins and the right and left atria, before to and during the ablation procedure. Principal Component Analysis (PCA) was applied to reduce data dimension and Granger causality and divergence techniques were applied to analyse connectivity along the atria, in three main regions: pulmonary veins, left atrium (LA) and right atrium (RA). The results showed that, before the procedure, patients with recurrence in the arrhythmia had greater connectivity between atrial areas. Moreover, during the ablation procedure, in patients with recurrence in the arrhythmial both atria were more connected than in patients that maintained sinus rhythms. These results can be helpful for procedures designing to end AF.<\/jats:p>","DOI":"10.3390\/e20010057","type":"journal-article","created":{"date-parts":[[2018,1,15]],"date-time":"2018-01-15T04:01:55Z","timestamp":1515988915000},"page":"57","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Granger Causality and Jensen\u2013Shannon Divergence to Determine Dominant Atrial Area in Atrial Fibrillation"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0439-6589","authenticated-orcid":false,"given":"Raquel","family":"Cervig\u00f3n","sequence":"first","affiliation":[{"name":"Escuela Polit\u00e9cnica, Universidad de Castilla-La Mancha, Camino del Pozuelo sn, 16071 Cuenca, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Francisco","family":"Castells","sequence":"additional","affiliation":[{"name":"Instituto ITACA, Universitad Polit\u00e9cnica de Valencia, 46022 Valencia, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jos\u00e9","family":"G\u00f3mez-Pulido","sequence":"additional","affiliation":[{"name":"Escuela Polit\u00e9cnica Superior, Universidad De Alcal\u00e1, Ctra. Madrid-Barcelona, Km. 33,600, 28871 Alcal\u00e1 de Henares, Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Juli\u00e1n","family":"P\u00e9rez-Villacast\u00edn","sequence":"additional","affiliation":[{"name":"Unidad de Arritmias, Hospital Cl\u00ednico San Carlos, Plaza de Cristo Rey sn, 28040 Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Javier","family":"Moreno","sequence":"additional","affiliation":[{"name":"Unidad de Arritmias, Hospital Ram\u00f3n y Cajal, Ctra. de Colmenar Viejo km. 9,100, 28034 Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2018,1,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"e001486","DOI":"10.1161\/JAHA.114.001486","article-title":"Prospective national study of the prevalence, incidence, management and outcome of a large contemporary cohort of patients with incident non-valvular atrial fibrillation","volume":"4","author":"Haim","year":"2015","journal-title":"J. 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