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Main Title: A new semi-automatic approach to find suitable virtual electrodes in arrays using an interpolation strategy
Author(s): Salchow-Hömmen, Christina
Valtin, Markus
Seel, Thomas
Schauer, Thomas
Type: Article
Abstract: Functional Electrical Stimulation via electrode arrays enables the user to form virtual electrodes (VEs) of dynamic shape, size, and position. We developed a feedback-control-assisted manual search strategy which allows the therapist to conveniently and continuously modify VEs to find a good stimulation area. This works for applications in which the desired movement consists of at least two degrees of freedom. The virtual electrode can be moved to arbitrary locations within the array, and each involved element is stimulated with an individual intensity. Meanwhile, the applied global stimulation intensity is controlled automatically to meet a predefined angle for one degree of freedom. This enables the therapist to concentrate on the remaining degree(s) of freedom while changing the VE position. This feedback-control-assisted approach aims to integrate the user's opinion and the patient's sensation. Therefore, our method bridges the gap between manual search and fully automatic identification procedures for array electrodes. Measurements in four healthy volunteers were performed to demonstrate the usefulness of our concept, using a 24-element array to generate wrist and hand extension.
Subject(s): functional electrical stimulation
electrode arrays
virtual electrode
identification strategy
feedback control
Issue Date: 13-Jun-2016
Date Available: 18-Nov-2020
Is Part Of: 10.14279/depositonce-10136
Language Code: en
DDC Class: 610 Medizin und Gesundheit
629 Andere Fachrichtungen der Ingenieurwissenschaften
Sponsor/Funder: BMBF, 16SV7069K, Verbundprojekt: Bewegungsfähigkeit und Mobilität wiedererlangen - BeMobil -; Teilvorhaben: Nutzerzentrierte Entwicklung technischer Methoden für eine optimale Mensch-Technik-Interaktion in der Bewegungsrehabilitation
Journal Title: European journal of translational myology
Publisher: Unipress
Volume: 26
Issue: 2
Publisher DOI: 10.4081/ejtm.2016.6029
EISSN: 2037-7460
ISSN: 1120-9992
TU Affiliation(s): Fak. 4 Elektrotechnik und Informatik » Inst. Energie- und Automatisierungstechnik
Appears in Collections:Technische Universität Berlin » Publications

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