Simultaneous and Proportional Real-Time Myocontrol of up to Three Degrees of Freedom of the Wrist and Hand

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorNowak, Markusen_US
dc.contributor.authorVujaklija, Ivanen_US
dc.contributor.authorSturma, Agnesen_US
dc.contributor.authorCastellini, Claudioen_US
dc.contributor.authorFarina, Darioen_US
dc.contributor.departmentDepartment of Electrical Engineering and Automationen
dc.contributor.groupauthorBionic and Rehabilitation Engineeringen
dc.contributor.organizationGerman Aerospace Centeren_US
dc.contributor.organizationImperial College Londonen_US
dc.date.accessioned2022-08-24T07:46:15Z
dc.date.available2022-08-24T07:46:15Z
dc.date.issued2023-02-01en_US
dc.descriptionPublisher Copyright: IEEE
dc.description.abstractAchieving robust, intuitive, simultaneous and proportional control over multiple degrees of freedom (DOFs) is an outstanding challenge in the development of myoelectric prosthetic systems. Since the priority in myoelectric prosthesis solutions is robustness and stability, their number of functions is usually limited. Objective: Here, we introduce a system for intuitive concurrent hand and wrist control, based on a robust feature-extraction protocol and machine-learning. Methods: Using the mean absolute value of high-density EMG, we train a ridge-regressor (RR) on only the sustained portions of the single-DOF contractions and leverage the regressor's inherent ability to provide simultaneous multi-DOF estimates. In this way, we robustly capture the amplitude information of the inputs while harnessing the power of the RR to extrapolate otherwise noisy and often overfitted estimations of dynamic portions of movements. Results: The real-time evaluation of the system on 13 able-bodied participants and an amputee shows that almost all single-DOF tasks could be reached (96% success rate), while at the same time users were able to complete most of the two-DOF (62%) and even some of the very challenging three-DOF tasks (37%). To further investigate the translational potential of the approach, we reduced the original 192-channel setup to a 16-channel configuration and the observed performance did not deteriorate. Notably, the amputee performed similarly well to the other participants, according to all considered metrics. Conclusion: This is the first real-time operated myocontrol system that consistently provides intuitive simultaneous and proportional control over 3-DOFs of wrist and hand, relying on only surface EMG signals from the forearm. Significance: Focusing on reduced complexity, a real-time test and the inclusion of an amputee in the study demonstrate the translational potential of the control system for future applications in prosthetic control.en
dc.description.versionPeer revieweden
dc.format.extent12
dc.format.extent1-12
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationNowak, M, Vujaklija, I, Sturma, A, Castellini, C & Farina, D 2023, ' Simultaneous and Proportional Real-Time Myocontrol of up to Three Degrees of Freedom of the Wrist and Hand ', IEEE Transactions on Biomedical Engineering, vol. 70, no. 2, pp. 459-469 . https://doi.org/10.1109/TBME.2022.3194104en
dc.identifier.doi10.1109/TBME.2022.3194104en_US
dc.identifier.issn0018-9294
dc.identifier.otherPURE UUID: 6b9dad5b-17f7-4166-9223-32a901156417en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/6b9dad5b-17f7-4166-9223-32a901156417en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85135746876&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/87172756/Vujaklija_Simultaneous_manuscript.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/116178
dc.identifier.urnURN:NBN:fi:aalto-202208244993
dc.language.isoenen
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
dc.relation.ispartofseriesIEEE Transactions on Biomedical Engineeringen
dc.relation.ispartofseriesVolume 10en
dc.rightsopenAccessen
dc.subject.keywordbionicsen_US
dc.subject.keywordElectromyographyen_US
dc.subject.keywordhanden_US
dc.subject.keywordhigh-density EMGen_US
dc.subject.keywordmyocontrolen_US
dc.subject.keywordprostheticsen_US
dc.subject.keywordProstheticsen_US
dc.subject.keywordReal-time systemsen_US
dc.subject.keywordridge-regressionen_US
dc.subject.keywordRobustnessen_US
dc.subject.keywordsurface EMGen_US
dc.subject.keywordTask analysisen_US
dc.subject.keywordTrainingen_US
dc.subject.keywordWristen_US
dc.titleSimultaneous and Proportional Real-Time Myocontrol of up to Three Degrees of Freedom of the Wrist and Handen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionacceptedVersion

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