The effect of time on EMG classification of hand motions in able-bodied and transradial amputees

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dc.contributor.authorWaris, Asim
dc.contributor.authorNiazi, Imran Khan
dc.contributor.authorJamil, Mohsin
dc.contributor.authorGilani, Omer
dc.contributor.authorEnglehart, Kevin
dc.contributor.authorJensen, Winnie
dc.contributor.authorShafique, Muhammad
dc.contributor.authorKamavuako, Ernest Nlandu
dc.date.accessioned2023-06-30T13:26:11Z
dc.date.available2023-06-30T13:26:11Z
dc.date.issued2018-06
dc.description.abstractWhile several studies have demonstrated the short-term performance of pattern recognition systems, long-term investigations are very limited. In this study, we investigated changes in classification performance over time. Ten able-bodied individuals and six amputees took part in this study. EMG signals were recorded concurrently from surface and intramuscular electrodes, with intramuscular electrodes kept in the muscles for seven days. Seven hand motions were evaluated daily using linear discriminant analysis and the classification error quantified within (WCE) and between (BCE) days. BCE was computed for all possible combinations between the days. For all subjects, surface sEMG (7.2 ± 7.6%), iEMG (11.9 ± 9.1%) and cEMG (4.6 ± 4.8%) were significantly different (P < 0.001) from each other. A regression between WCE and days (1–7) was on average not significant implying that performance may be considered similar within each day. Regression between BCE and time difference (Df) in days was significant. The slope between BCE and Df (0–6) was significantly different from zero for sEMG (R2 = 89%) and iEMG (R2 = 95%) in amputees. Results indicate that performance continuously degrades as the time difference between training and testing day increases. Furthermore, for iEMG, performance in amputees was directly proportional to the size of the residual limb.
dc.description.copyright© This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
dc.identifier.doi10.1016/j.jelekin.2018.04.004
dc.identifier.issn1050-6411
dc.identifier.urihttps://unbscholar.lib.unb.ca/handle/1882/37243
dc.language.isoen
dc.publisherElsevier
dc.relation.hasversionhttps://doi.org/10.1016/j.jelekin.2018.04.004
dc.relation.ispartofJournal of Electromyography and Kinesiology
dc.rightshttp://purl.org/coar/access_right/c_abf2
dc.subject.disciplineElectrical and Computer Engineering
dc.titleThe effect of time on EMG classification of hand motions in able-bodied and transradial amputees
dc.typejournal-article
oaire.citation.endPage80
oaire.citation.startPage72
oaire.citation.titleJournal of Electromyography and Kinesiology
oaire.citation.volume40
oaire.license.conditionhttp://creativecommons.org/licenses/by-nc-nd/4.0/
oaire.versionhttp://purl.org/coar/version/c_ab4af688f83e57aa

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