title: Design of a robust EMG sensing interface for pattern classification.
abstract: Electromyographic (EMG) pattern classification has been widely investigated for neural control of external devices in order to assist with movements of patients with motor deficits. Classification performance deteriorates due to inevitable disturbances to the sensor interface, which significantly challenges the clinical value of this technique. This study aimed to design a sensor fault detection (SFD) module in the sensor interface to provide reliable EMG pattern classification. This module monitored the recorded signals from individual EMG electrodes and performed a self-recovery strategy to recover the classification performance when one or more sensors were disturbed. To evaluate this design, we applied synthetic disturbances to EMG signals collected from leg muscles of able-bodied subjects and a subject with a transfemoral amputation and compared the accuracies for classifying transitions between different locomotion modes with and without the SFD module. The results showed that the SFD module maintained classification performance when one signal was distorted and recovered about 20% of classification accuracy when four signals were distorted simultaneously. The method was simple to implement. Additionally, these outcomes were observed for all subjects, including the leg amputee, which implies the promise of the designed sensor interface for providing a reliable neural-machine interface for artificial legs.
authors.affiliation: Department of Electrical, Computer, and Biomedical Engineering, University of Rhode Island, Kingston, RI 02881, USA. huang@ele.uri.edu
authors.forename: He
authors.initials: H
authors.lastname: Huang
authors.forename: Fan
authors.initials: F
authors.lastname: Zhang
authors.forename: Yan L
authors.initials: YL
authors.lastname: Sun
authors.forename: Haibo
authors.initials: H
authors.lastname: He
mesh_terms: D000328:Adult; D000368:Aged; D001186:Artificial Limbs; D004576:Electromyography / Q000145:classification* / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design / Q000295:instrumentation* / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000502:physiology*
references.citation: IEEE Trans Neural Syst Rehabil Eng. 2009 Jun;17(3):270-8
references.pmid: 19497834
references.citation: J Electromyogr Kinesiol. 2006 Dec;16(6):541-8
references.pmid: 17045489
references.citation: Med Eng Phys. 1999 Jun;21(5):303-11
references.pmid: 10576421
references.citation: IEEE Trans Biomed Eng. 2010 Mar;57(3):542-51
references.pmid: 19846361
references.citation: Phys Med Rehabil Clin N Am. 2006 Feb;17(1):1-13
references.pmid: 16517341
references.citation: IEEE Trans Neural Syst Rehabil Eng. 2005 Sep;13(3):325-34
references.pmid: 16200756
references.citation: J Rehabil Res Dev. 2009;46(3):361-73
references.pmid: 19675988
references.citation: Med Eng Phys. 1996 Oct;18(7):529-37
references.pmid: 8892237
references.citation: IEEE Trans Biomed Eng. 2007 May;54(5):847-53
references.pmid: 17518281
references.citation: IEEE Trans Neural Syst Rehabil Eng. 2010 Apr;18(2):185-92
references.pmid: 20071269
references.citation: Prosthet Orthot Int. 2004 Dec;28(3):245-53
references.pmid: 15658637
references.citation: Clin Neurophysiol. 2001 Apr;112(4):583-92
references.pmid: 11275529
references.citation: IEEE Trans Biomed Eng. 1993 Jan;40(1):82-94
references.pmid: 8468080
references.citation: IEEE Trans Neural Syst Rehabil Eng. 2010 Feb;18(1):49-57
references.pmid: 20071277
references.citation: Crit Rev Biomed Eng. 2002;30(4-6):459-85
references.pmid: 12739757
references.citation: J Biomed Eng. 1982 Jan;4(1):17-22
references.pmid: 7078136
references.citation: Conf Proc IEEE Eng Med Biol Soc. 2006;2006:2203-6
references.pmid: 17946096
references.citation: IEEE Trans Biomed Eng. 1997 Jul;44(7):567-74
references.pmid: 9210816
references.citation: IEEE Trans Biomed Eng. 2009 Jan;56(1):65-73
references.pmid: 19224720
references.citation: J Neurophysiol. 2007 Nov;98(5):2974-82
references.pmid: 17728391
references.citation: Med Biol Eng Comput. 2002 May;40(3):332-8
references.pmid: 12195981
references.citation: Eur J Appl Physiol Occup Physiol. 1979 May 18;41(2):119-29
references.pmid: 467411
references.citation: IEEE Trans Biomed Eng. 2003 Jul;50(7):848-54
references.pmid: 12848352
references.citation: IEEE Trans Neural Syst Rehabil Eng. 2005 Sep;13(3):280-91
references.pmid: 16200752
references.citation: Biomed Eng Online. 2009 Feb 25;8:5
references.pmid: 19243627
references.citation: Assist Technol. 1990;2(1):3-18
references.pmid: 10149040