Control system of bioprosthetic hand based on advanced analysis of biosignals and feedback from the prosthesis sensors

Authors:
Marek Kurzynski;Andrzej Wolczowski
Affiliations:
Dept. of Systems and Computer Networks, Wroclaw University of Technology, Wroclaw, Poland;Dept. of Systems and Computer Networks, Wroclaw University of Technology, Wroclaw, Poland
Venue:
ITIB'12 Proceedings of the Third international conference on Information Technologies in Biomedicine
Year:
2012

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Abstract

The paper presents an advanced method of recognition of patient's intention to move of multijoint hand prosthesis during the grasping and manipulation of objects in a dexterous manner. The proposed method is based on two-level multiclassifier system with heterogeneous base classifiers dedicated to particular types of biosignals (EMG, MMG and EEG) and with combining mechanism using a dynamic ensemble selection scheme and probabilistic competence fuction. Additionally, the feedback signal derived from the prosthesis sensors is applied to the correction algorithm of classification results. The classification methodology developed can be practically applied to the design of dexterous bioprosthetic hand and in the computer system for learning motor coordination, dedicated to individuals preparing for a prosthesis or waiting for a hand transplantation.