Amplitude versus spatially modulated electrotactile feedback for myoelectric control of two degrees of freedom

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dc.contributor.authorGarenfeld, Martin A.
dc.contributor.authorMortensen, Christian K.
dc.contributor.authorStrbac, Matija
dc.contributor.authorDideriksen, Jakob L.
dc.contributor.authorDosen, Strahinja
dc.contributor.institutionSG
dc.date.accessioned2024-07-24T12:12:36Z
dc.date.available2024-07-24T12:12:36Z
dc.date.issued2020-08
dc.descriptionPublisher Copyright: © 2020 IOP Publishing Ltd.
dc.description.abstractObjective. Artificial proprioceptive feedback from a myoelectric prosthesis is an important aspect in enhancing embodiment and user satisfaction, possibly lowering the demand for visual attention while controlling a prosthesis in everyday tasks. Contemporary myoelectric prostheses are advanced mechatronic systems with multiple degrees of freedom, and therefore, to communicate the prosthesis state, the feedback interface needs to transmit several variables simultaneously. In the present study, two different configurations for conveying proprioceptive information of wrist rotation and hand aperture through multichannel electrotactile stimulation were developed and evaluated during online myoelectric control. Approach. Myoelectric recordings were acquired from the dominant forearm and electrotactile stimulation was delivered on the non-dominant forearm using a compact interface. The first feedback configuration, which was based on spatial coding, transmitted the information using a moving tactile stimulus, whereas the second, amplitude-based configuration conveyed the position via sensation intensity. Thirteen able-bodied subjects used pattern classification-based myoelectric control with both feedback configurations to accomplish a target-reaching task. Main results. High task performance (completion rate > 90%) was observed for both configurations, with no significant difference in completion rate, time to reach the target, distance error and path efficiency, respectively. Significance. Overall, the results demonstrated that both feedback configurations allowed subjects to perceive and interpret two feedback variables delivered simultaneously, despite using a compact stimulation interface. This is an encouraging result for the prospect of communicating the full state of a multifunctional hand prosthesis.en
dc.description.statusPeer reviewed
dc.identifier.citationGarenfeld , M A , Mortensen , C K , Strbac , M , Dideriksen , J L & Dosen , S 2020 , ' Amplitude versus spatially modulated electrotactile feedback for myoelectric control of two degrees of freedom ' , Journal of Neural Engineering , vol. 17 , no. 4 , 046034 . https://doi.org/10.1088/1741-2552/aba4fd
dc.identifier.doi10.1088/1741-2552/aba4fd
dc.identifier.issn1741-2560
dc.identifier.urihttps://hdl.handle.net/11556/4294
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85089610458&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofJournal of Neural Engineering
dc.relation.projectIDHorizon 2020 Framework Programme, H2020, 856718
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subject.keywordsClosed-loop control
dc.subject.keywordsElectrotactile stimulation
dc.subject.keywordsMyoelectric prosthesis
dc.subject.keywordsProprioceptive feedback
dc.subject.keywordsSensory feedback
dc.subject.keywordsBiomedical Engineering
dc.subject.keywordsCellular and Molecular Neuroscience
dc.titleAmplitude versus spatially modulated electrotactile feedback for myoelectric control of two degrees of freedomen
dc.typejournal article
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