{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,9]],"date-time":"2026-05-09T19:56:36Z","timestamp":1778356596946,"version":"3.51.4"},"reference-count":58,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2017,4,29]],"date-time":"2017-04-29T00:00:00Z","timestamp":1493424000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100006302","name":"Universidad de Alcal\u00e1","doi-asserted-by":"publisher","award":["GC2016-004"],"award-info":[{"award-number":["GC2016-004"]}],"id":[{"id":"10.13039\/501100006302","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The purpose of this paper is to determine whether gamma-band activity detection is improved when a filter, based on empirical mode decomposition (EMD), is added to the pre-processing block of single-channel electroencephalography (EEG) signals. EMD decomposes the original signal into a finite number of intrinsic mode functions (IMFs). EEGs from 25 control subjects were registered in basal and motor activity (hand movements) using only one EEG channel. Over the basic signal, IMF signals are computed. Gamma-band activity is computed using power spectrum density in the 30\u201360 Hz range. Event-related synchronization (ERS) was defined as the ratio of motor and basal activity. To evaluate the performance of the new EMD based method, ERS was computed from the basic and IMF signals. The ERS obtained using IMFs improves, from 31.00% to 73.86%, on the original ERS for the right hand, and from 22.17% to 47.69% for the left hand. As EEG processing is improved, the clinical applications of gamma-band activity will expand.<\/jats:p>","DOI":"10.3390\/s17050989","type":"journal-article","created":{"date-parts":[[2017,5,2]],"date-time":"2017-05-02T11:37:20Z","timestamp":1493725040000},"page":"989","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":58,"title":["Analysis of Gamma-Band Activity from Human EEG Using Empirical Mode Decomposition"],"prefix":"10.3390","volume":"17","author":[{"given":"Carlos","family":"Amo","sequence":"first","affiliation":[{"name":"Departamento de Electr\u00f3nica, Grupo de Ingenier\u00eda Biom\u00e9dica, Universidad de Alcal\u00e1, Alcal\u00e1 de Henares 28801, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0018-5805","authenticated-orcid":false,"given":"Luis","family":"De Santiago","sequence":"additional","affiliation":[{"name":"Departamento de Electr\u00f3nica, Grupo de Ingenier\u00eda Biom\u00e9dica, Universidad de Alcal\u00e1, Alcal\u00e1 de Henares 28801, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4179-6100","authenticated-orcid":false,"given":"Rafael","family":"Barea","sequence":"additional","affiliation":[{"name":"Departamento de Electr\u00f3nica, Grupo de Ingenier\u00eda Biom\u00e9dica, Universidad de Alcal\u00e1, Alcal\u00e1 de Henares 28801, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Almudena","family":"L\u00f3pez-Dorado","sequence":"additional","affiliation":[{"name":"Departamento de Electr\u00f3nica, Grupo de Ingenier\u00eda Biom\u00e9dica, Universidad de Alcal\u00e1, Alcal\u00e1 de Henares 28801, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luciano","family":"Boquete","sequence":"additional","affiliation":[{"name":"Departamento de Electr\u00f3nica, Grupo de Ingenier\u00eda Biom\u00e9dica, Universidad de Alcal\u00e1, Alcal\u00e1 de Henares 28801, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2017,4,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"823","DOI":"10.1016\/j.neuroimage.2013.07.049","article-title":"Glutamatergic correlates of gamma-band oscillatory activity during cognition: A concurrent ER-MRS and EEG study","volume":"85","author":"Lally","year":"2014","journal-title":"Neuroimage"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"18370","DOI":"10.3390\/s141018370","article-title":"A Preliminary Study of Muscular Artifact Cancellation in Single-Channel EEG","volume":"14","author":"Chen","year":"2014","journal-title":"Sensors"},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Bhardwaj, S., Jadhav, P., Adapa, B., Acharyya, A., and Naik, G.R. 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