{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,26]],"date-time":"2026-07-26T02:32:05Z","timestamp":1785033125106,"version":"3.55.0"},"reference-count":28,"publisher":"MIT Press - Journals","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Neural Computation"],"published-print":{"date-parts":[[1999,2,1]]},"abstract":"<jats:p> An extension of the infomax algorithm of Bell and Sejnowski (1995) is presented that is able blindly to separate mixed signals with sub- and supergaussian source distributions. This was achieved by using a simple type of learning rule first derived by Girolami (1997) by choosing negentropy as a projection pursuit index. Parameterized probability distributions that have sub- and supergaussian regimes were used to derive a general learning rule that preserves the simple architecture proposed by Bell and Sejnowski (1995), is optimized using the natural gradient by Amari (1998), and uses the stability analysis of Cardoso and Laheld (1996) to switch between sub- and supergaussian regimes. We demonstrate that the extended infomax algorithm is able to separate 20 sources with a variety of source distributions easily. Applied to high-dimensional data from electroencephalographic recordings, it is effective at separating artifacts such as eye blinks and line noise from weaker electrical signals that arise from sources in the brain. <\/jats:p>","DOI":"10.1162\/089976699300016719","type":"journal-article","created":{"date-parts":[[2002,7,27]],"date-time":"2002-07-27T11:55:01Z","timestamp":1027770901000},"page":"417-441","source":"Crossref","is-referenced-by-count":1628,"title":["Independent Component Analysis Using an Extended Infomax Algorithm for Mixed Subgaussian and Supergaussian Sources"],"prefix":"10.1162","volume":"11","author":[{"given":"Te-Won","family":"Lee","sequence":"first","affiliation":[{"name":"Howard Hughes Medical Institute, Computational Neurobiology Laboratory, Salk Institute, La Jolla, CA 92037, U.S.A."},{"name":"Institut f\u00fcr Electronik, Technische Universit\u00e4t Berlin, Berlin, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mark","family":"Girolami","sequence":"additional","affiliation":[{"name":"Department of Computing and Information Systems, University of Paisley, PA1 2BE, Scotland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Terrence J.","family":"Sejnowski","sequence":"additional","affiliation":[{"name":"Howard Hughes Medical Institute, Computational Neurobiology Laboratory, Salk Institute, La Jolla, CA 92037, U.S.A."},{"name":"Department of Biology, University of California, San Diego, La Jolla, CA 92093, U.S.A."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"281","reference":[{"key":"p_1","doi-asserted-by":"publisher","DOI":"10.1162\/089976698300017746"},{"key":"p_2","doi-asserted-by":"publisher","DOI":"10.1109\/78.650095"},{"key":"p_3","doi-asserted-by":"publisher","DOI":"10.1016\/S0893-6080(97)00039-7"},{"key":"p_5","first-page":"11","author":"Attias H.","year":"1999","journal-title":"Neural Computation, 11, to appear in"},{"key":"p_6","doi-asserted-by":"publisher","DOI":"10.1162\/neco.1995.7.6.1129"},{"key":"p_7","doi-asserted-by":"publisher","DOI":"10.1016\/0013-4694(91)90154-V"},{"key":"p_8","doi-asserted-by":"publisher","DOI":"10.1109\/5.720250"},{"key":"p_10","doi-asserted-by":"publisher","DOI":"10.1109\/97.566704"},{"issue":"2","key":"p_11","first-page":"434","volume":"45","author":"Cardoso J.-F.","year":"1996","journal-title":"IEEE Trans. on S.P."},{"issue":"46","key":"p_12","first-page":"362","volume":"140","author":"Cardoso J.","year":"1993","journal-title":"IEE Proceedings-F"},{"key":"p_13","doi-asserted-by":"publisher","DOI":"10.1049\/el:19940956"},{"key":"p_14","doi-asserted-by":"publisher","DOI":"10.1016\/0165-1684(94)90029-9"},{"key":"p_19","doi-asserted-by":"publisher","DOI":"10.1162\/089976698300016981"},{"key":"p_20","doi-asserted-by":"publisher","DOI":"10.1049\/ip-vis:19971418"},{"key":"p_22","first-page":"11","author":"Hochreiter S.","year":"1999","journal-title":"Neural Computation, 11, to appear in"},{"key":"p_23","doi-asserted-by":"publisher","DOI":"10.1162\/neco.1997.9.7.1483"},{"key":"p_25","doi-asserted-by":"publisher","DOI":"10.1016\/0165-1684(91)90079-X"},{"key":"p_27","doi-asserted-by":"publisher","DOI":"10.1109\/72.572090"},{"key":"p_34","doi-asserted-by":"publisher","DOI":"10.1162\/neco.1997.9.6.1305"},{"key":"p_36","first-page":"S39","volume":"28","author":"Makeig S.","year":"1993","journal-title":"Society for Psychophysiology"},{"key":"p_37","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.94.20.10979"},{"key":"p_38","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.95.3.803"},{"key":"p_40","doi-asserted-by":"publisher","DOI":"10.1088\/0954-898X\/5\/4\/008"},{"key":"p_41","doi-asserted-by":"publisher","DOI":"10.1162\/neco.1997.9.7.1421"},{"key":"p_42","doi-asserted-by":"publisher","DOI":"10.1016\/S0925-2312(97)00045-3"},{"key":"p_45","doi-asserted-by":"publisher","DOI":"10.1098\/rsta.1894.0003"},{"key":"p_46","doi-asserted-by":"publisher","DOI":"10.1109\/78.599941"},{"key":"p_47","doi-asserted-by":"publisher","DOI":"10.1109\/72.536322"}],"container-title":["Neural Computation"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mitpressjournals.org\/doi\/pdf\/10.1162\/089976699300016719","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,3,12]],"date-time":"2021-03-12T21:23:38Z","timestamp":1615584218000},"score":1,"resource":{"primary":{"URL":"https:\/\/direct.mit.edu\/neco\/article\/11\/2\/417-441\/6242"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1999,2,1]]},"references-count":28,"journal-issue":{"issue":"2","published-print":{"date-parts":[[1999,2,1]]}},"alternative-id":["10.1162\/089976699300016719"],"URL":"https:\/\/doi.org\/10.1162\/089976699300016719","relation":{},"ISSN":["0899-7667","1530-888X"],"issn-type":[{"value":"0899-7667","type":"print"},{"value":"1530-888X","type":"electronic"}],"subject":[],"published":{"date-parts":[[1999,2,1]]}}}