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With this system motor responses are elicited through concurrent activation of electrode matrix pads collectively termed \u201cvirtual electrodes\u201d (VEs) with appropriate stimulation parameters. We observed VEs used to produce selective wrist, finger, and thumb extension movements in 20 therapy sessions of 12 hemiplegic stroke patients. The VEs which produce these three selective movements were created manually on the ergonomic multi\u2010pad electrode by experienced clinicians based on visual inspection of the muscle responses. Individual results indicated that changes in VE configuration were required each session for all patients and that overlap in joint movements was evident between some VEs. However, by analyzing group data, we defined the probability distribution over the electrode surface for the three VEs of interest. Furthermore, through Bayesian logic we obtained preferred stimulation zones that are in accordance with our previously reported heuristically obtained results. We have also analyzed the number of active pads and stimulation amplitudes for these three VEs. Presented results provide a basis for an automated electrode calibration algorithm built on a priori knowledge or the starting point for manual selection of stimulation points.<\/jats:p>","DOI":"10.1111\/aor.13057","type":"journal-article","created":{"date-parts":[[2017,11,17]],"date-time":"2017-11-17T08:35:15Z","timestamp":1510907715000},"source":"Crossref","is-referenced-by-count":15,"title":["Temporal and Spatial Variability of Surface Motor Activation Zones in Hemiplegic Patients During Functional Electrical Stimulation Therapy Sessions"],"prefix":"10.1111","volume":"41","author":[{"given":"Jovana","family":"Male\u0161evi\u0107","sequence":"first","affiliation":[{"name":"Tecnalia Serbia Ltd Belgrade Serbia"},{"name":"University of Belgrade, Biomedical Engineering and Technology Belgrade Serbia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Matija","family":"\u0160trbac","sequence":"additional","affiliation":[{"name":"Tecnalia Serbia Ltd Belgrade Serbia"},{"name":"University of Belgrade School of Electrical Engineering Belgrade Serbia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Milica","family":"Isakovi\u0107","sequence":"additional","affiliation":[{"name":"Tecnalia Serbia Ltd Belgrade Serbia"},{"name":"University of Belgrade School of Electrical Engineering Belgrade Serbia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vladimir","family":"Koji\u0107","sequence":"additional","affiliation":[{"name":"Tecnalia Serbia Ltd Belgrade Serbia"},{"name":"Innovation Center, School of Electrical Engineering, University of Belgrade Belgrade Serbia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ljubica","family":"Konstantinovi\u0107","sequence":"additional","affiliation":[{"name":"Faculty of Medicine, University of Belgrade Belgrade Serbia"},{"name":"Clinic for Rehabilitation \u201cDr Miroslav Zotovi\u0107\u201d Belgrade Serbia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Aleksandra","family":"Vidakovi\u0107","sequence":"additional","affiliation":[{"name":"Faculty of Medicine, University of Belgrade Belgrade Serbia"},{"name":"Clinic for Rehabilitation \u201cDr Miroslav Zotovi\u0107\u201d Belgrade Serbia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Suzana","family":"Dedijer Dujovi\u0107","sequence":"additional","affiliation":[{"name":"University of Belgrade, Biomedical Engineering and Technology Belgrade Serbia"},{"name":"Clinic for Rehabilitation \u201cDr Miroslav Zotovi\u0107\u201d Belgrade Serbia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Milo\u0161","family":"Kosti\u0107","sequence":"additional","affiliation":[{"name":"Tecnalia Research &amp; Innovation \u2013 Health Division San Sebasti\u00e1n Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thierry","family":"Keller","sequence":"additional","affiliation":[{"name":"Tecnalia Research &amp; Innovation \u2013 Health Division San Sebasti\u00e1n Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2017,11,17]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.apmr.2015.01.013"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1139\/y04-057"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.2298\/JAC0201009P"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF02441635"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1109\/86.681187"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0003-9993(96)90061-1"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.1525-1594.2002.06934.x"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1109\/7333.1000115"},{"key":"e_1_2_8_10_1","unstructured":"FujiiT SekiK HandaY.Development of a new FES system with trained super\u2010multichannel surface electrodes. 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