Abstract
Myoelectric controlled interfaces driven by muscle activities have achieved good performance in ideal conditions and showed many potential medical-related and industrial applications. However, in practical applications, the performance could be drastically degraded due to the electrode (sensor) shift, which is inevitable in donning and doffing the system. In this study, we presented a novel channel selection method against electrode shift for robust pattern-recognition based myoelectric control. The proposed method was evaluated on twenty-four subjects, including twenty-two able-bodied subjects and two amputees, and compared with two traditional channel selection methods, i.e., uniform selection (UNI) and sequential feature selection (SFS). We demonstrated that the offline error rates of the proposed method were significantly lower than those of the other two methods (P<0.05), and its online performance in shift conditions was comparable to that in ideal conditions. These outcomes benefit the practical applications of robust myoelectric controlled interfaces.
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References
Rodriguez-Tapia B, Soto I, Martinez D M, et al. Myoelectric interfaces and related applications: Current state of EMG signal processing—A systematic review. IEEE Access, 2020, 8: 7792–7805
Hargrove L J, Miller L A, Turner K, et al. Myoelectric pattern recognition outperforms direct control for transhumeral amputees with targeted muscle reinnervation: A randomized clinical trial. Sci Rep, 2017, 7: 247–255
Zhuang Y, Leng Y, Zhou J, et al. Voluntary control of an ankle joint exoskeleton by able-bodied individuals and stroke survivors using EMG-based admittance control scheme. IEEE Trans Biomed Eng, 2021, 68: 695–705
Hakonen M, Piitulainen H, Visala A. Current state of digital signal processing in myoelectric interfaces and related applications. Biomed Signal Process Control, 2015, 18: 334–359
Tortora S, Moro M, Menegatti E. Dual-myo real-time control of a humanoid arm for teleoperation. In: International Conference on Human-Robot Interaction. Daegu, 2020. 245–249
DelPreto J, Rus D. Sharing the load: Human-robot team lifting using muscle activity. In: International Conference on Robotics and Automation. Montreal, 2019. 7906–7912
Simão M, Mendes N, Gibaru O, et al. A review on electromyography decoding and pattern recognition for human-machine interaction. IEEE Access, 2019, 7: 39564–39582
Dellacasa Bellingegni A, Gruppioni E, Colazzo G, et al. NLR, MLP, SVM, and LDA: A comparative analysis on EMG data from people with trans-radial amputation. J NeuroEng Rehabil, 2017, 14: 82
He J, Sheng X, Zhu X, et al. Electrode density affects the robustness of myoelectric pattern recognition system with and without electrode shift. IEEE J Biomed Health Inform, 2019, 23: 156–163
Tolooshams B, Jiang N. Robustness of frequency division technique for online myoelectric pattern recognition against contraction-level variation. Front Bioeng Biotechnol, 2017, 5: 3
Tkach D, Huang H, Kuiken T A. Study of stability of time-domain features for electromyographic pattern recognition. J Neuroeng Rehabil, 2010, 7: 21
Young A J, Hargrove L J, Kuiken T A. The effects of electrode size and orientation on the sensitivity of myoelectric pattern recognition systems to electrode shift. IEEE Trans Biomed Eng, 2011, 58: 2537–2544
He J, Joshi M V, Chang J, et al. Efficient correction of armband rotation for myoelectric-based gesture control interface. J Neural Eng, 2020, 17: 036025
Young A J, Hargrove L J, Kuiken T A. Improving myoelectric pattern recognition robustness to electrode shift by changing interelectrode distance and electrode configuration. IEEE Trans Biomed Eng, 2012, 59: 645–652
Zhang X, Wu L, Yu B, et al. Adaptive calibration of electrode array shifts enables robust myoelectric control. IEEE Trans Biomed Eng, 2020, 67: 1947–1957
Stango A, Negro F, Farina D. Spatial correlation of high-density EMG signals provides features robust to electrode number and shift in pattern recognition for myocontrol. IEEE Trans Neural Syst Rehabil Eng, 2014, 23: 189–198
Hargrove L, Englehart K, Hudgins B. A training strategy to reduce classification degradation due to electrode displacements in pattern recognition based myoelectric control. Biomed Signal Process Control, 2008, 3: 175–180
Huang G, Xian Z, Tang F, et al. Low-density surface electromyographic patterns under electrode shift: Characterization and NMF-based classification. Biomed Signal Process Control, 2020, 59: 101890
He J, Sheng X, Zhu X, et al. Spatial information enhances myoelectric control performance with only two channels. IEEE Trans Ind Inf, 2019, 15: 1226–1233
Huang H, Zhou P, Li G, et al. An analysis of emg electrode configuration for targeted muscle reinnervation based neural machine interface. IEEE Trans Neural Syst Rehabil Eng, 2008, 16: 37–45
Daley H, Englehart K, Hargrove L, et al. High density electromyography data of normally limbed and transradial amputee subjects for multifunction prosthetic control. J Electromyogr Kinesiol, 2012, 22: 478–484
Hargrove L J, Englehart K, Hudgins B. A comparison of surface and intramuscular myoelectric signal classification. IEEE Trans Biomed Eng, 2007, 54: 847–853
Hwang H J, Mathias Hahne J, Müller K R. Channel selection for simultaneous and proportional myoelectric prosthesis control of multiple degrees-of-freedom. J Neural Eng, 2014, 11: 056008
He J, Zhu X. Combining improved gray-level co-occurrence matrix with high density grid for myoelectric control robustness to electrode shift. IEEE Trans Neural Syst Rehabil Eng, 2017, 25: 1539–1548
Menon R, Di Caterina G, Lakany H, et al. Study on interaction between temporal and spatial information in classification of EMG signals for myoelectric prostheses. IEEE Trans Neural Syst Rehabil Eng, 2017, 25: 1832–1842
Waris A, Mendez I, Englehart K, et al. On the robustness of real-time myoelectric control investigations: A multiday Fitts’ law approach. J Neural Eng, 2019, 16: 026003
Hudgins B, Parker P, Scott R N. A new strategy for multifunction myoelectric control. IEEE Trans Biomed Eng, 1993, 40: 82–94
Lv B, Sheng X, Hao D, et al. Relationship between offline and online metrics in myoelectric pattern recognition control based on target achievement control test. In: International Conference of the IEEE Engineering in Medicine and Biology Society. Berlin, 2019. 6595–6598
Li G, Schultz A E, Kuiken T A. Quantifying pattern recognition—Based myoelectric control of multifunctional transradial prostheses. IEEE Trans Neural Syst Rehabil Eng, 2010, 18: 185–192
Farrell T R, Weir R F F. A comparison of the effects of electrode implantation and targeting on pattern classification accuracy for prosthesis control. IEEE Trans Biomed Eng, 2008, 55: 2198–2211
Scheme E, Englehart K. Electromyogram pattern recognition for control of powered upper-limb prostheses: State of the art and challenges for clinical use. J Rehabil Res Dev, 2011, 48: 643–659
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This work was supported by the China National Key R&D Program (Grant No. 2018YFB1307200), the National Natural Science Foundation of China (Grant Nos. 91948302, 51620105002), and the Science and Technology Commission of Shanghai Municipality (Grant No. 18JC1410400).
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Lv, B., He, J., Sheng, X. et al. Channel selection against electrode shift enables robust myoelectric control without retraining. Sci. China Technol. Sci. 64, 1653–1662 (2021). https://doi.org/10.1007/s11431-021-1842-3
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DOI: https://doi.org/10.1007/s11431-021-1842-3