Name
Title | ||
|---|---|---|
A decision-based velocity ramp for minimizing the effect of misclassifications during real-time pattern recognition control. |
Abstract | ||
|---|---|---|
Real-time pattern recognition control is frequently affected by misclassifications. This study investigated the use of a decision-based velocity ramp that attenuated movement speed after a change in classifier decision. The goal was to improve prosthesis positioning by minimizing the effect of unintended movements. Non-amputee and amputee subjects controlled a prosthesis in real-time using pattern recognition. While performing a target achievement test in a virtual environment, subjects had a significantly higher completion rate (p < 0.05) and a more direct path (p < 0.05) to the target with the velocity ramp than without it. Using a physical prosthesis, subjects stacked a greater average number of 1 cubes (p < 0.05) in three minutes with the velocity ramp than without it (76% more blocks for non-amputees; 89% more blocks for amputees). Real-time control using the velocity ramp also showed significant performance improvements above using majority vote. Eighty-three percent of subjects preferred to control the prosthesis using the velocity ramp. These results suggest that using a decision-based velocity ramp with pattern recognition may improve user performance. Since the velocity ramp is a post-processing step, it has the potential to be used with a variety of classifiers for many applications. |
Year | DOI | Venue |
|---|---|---|
2011 | 10.1109/TBME.2011.2155063 | IEEE transactions on bio-medical engineering |
Keywords | Field | DocType |
upper limb,prosthesis positioning,prosthesis,medical control systems,pattern recognition,real-time pattern recognition control,myoelectric control,myoelectric prostheses,prosthetics,medical signal processing,electromyography,misclassifications,decision-based velocity ramp,amputees,surface electromyography (emg) | Pattern recognition,Simulation,Computer science,Electronic engineering,Artificial intelligence,Majority rule,Classifier (linguistics) | Journal |
Volume | Issue | ISSN |
58 | 8 | 1558-2531 |
Citations | PageRank | References |
25 | 2.03 | 9 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Ann M Simon | 1 | 28 | 4.98 |
| Levi J Hargrove | 2 | 438 | 42.47 |
| Blair A. Lock | 3 | 25 | 2.03 |
| Todd A Kuiken | 4 | 85 | 15.61 |