A tool for balance control training using muscle synergies and multimodal interfaces.

D Galeano,S Piazza,J L Pons,D Torricelli,F Brunetti

doi:10.1155/2014/565370

Abstract

Balance control plays a key role in neuromotor rehabilitation after stroke or spinal cord injuries. Computerized dynamic posturography (CDP) is a classic technological tool to assess the status of balance control and to identify potential disorders. Despite the more accurate diagnosis generated by these tools, the current strategies to promote rehabilitation are still limited and do not take full advantage of the technologies available. This paper presents a novel balance training platform which combines a CDP device made from low-cost interfaces, such as the Nintendo Wii Balance Board and the Microsoft Kinect. In addition, it integrates a custom electrical stimulator that uses the concept of muscle synergies to promote natural interaction. The aim of the platform is to support the exploration of innovative multimodal therapies. Results include the technical validation of the platform using mediolateral and anteroposterior sways as basic balance training therapies.

Highlights

Balance control is a critcal aspect for the growing elderly population and one of the first rehabilitation goals after spinal cord injury (SCI) and stroke [1].Generally, balance control rehabilitation consists of the execution of specific movements or the adoption of static postures
The second important parameter is the refresh rate of muscle synergies (Fs), which should be lower than Ft but large enough to sample every variation of neural commands during the sway cycle
Using temporary values, it is possible to simulate in MATLAB the outputs obtained with the functional electrostimulation (FES) system during the test. In this simulation we considered the resolution of the TEREFES, which means that the TEREFES output simulated is the same as that generated

Summary

Introduction

Balance control is a critcal aspect for the growing elderly population and one of the first rehabilitation goals after spinal cord injury (SCI) and stroke [1]. Balance control rehabilitation consists of the execution of specific movements (sway, inclination) or the adoption of static postures. Electrical stimulation is used to promote the recruitment of the muscles that take part in balance control. The use of robotics devices has been proposed, without yet generating a significant impact on the clinical practice. In this scenario, computerized dynamic posturography (CDP) is a valuable tool to measure balance control and to assess neuromotor recovery through a rehabilitation process. The system makes use of the concept of muscle synergies, in the attempt to achieve a closer and more natural interaction with the central nervous system (CNS) of the patient, possibly resulting in better rehabilitation outcomes

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Results

Discussion

Conclusion