Abstract:
Contralateral controlled functional electrical stimulation (CCFES) can induce simultaneous movements in patients’ bilateral hands. It has been clinically proven to be eff...Show MoreMetadata
Abstract:
Contralateral controlled functional electrical stimulation (CCFES) can induce simultaneous movements in patients’ bilateral hands. It has been clinically proven to be effective in improving hand motor control and dexterity. sEMG and bending sensor-based data gloves for detecting patients’ motor intent have been developed with limitations. sEMG sensor signals are unstable and susceptible to noise. Data gloves composed of bending sensors require complicated calibration and tend to have data drift. In this paper, a LiDAR-based system for hand CCFES is proposed. The method utilized LiDAR to detect the patient’s motion intention without contact in CCFES systems. It has been clinically proven that LiDARs can effectively distinguish the different motion amplitudes of hand gestures as quantitative evaluation sensors of functional electrical stimulation (FES). Training data for classifiers were collected from 9 healthy individuals and 15 stroke patients performing 4 gestures, including hand opening, fist clenching, wrist extension, and wrist flexion. The support vector machine (SVM), linear discriminant analysis (LDA), and k-nearest neighbor (kNN) were verified for their classification performance in offline hand gesture recognition tests. Experiments were also conducted on 6 stroke volunteers to evaluate gestures triggered by FES. The SVM classifier showed excellent classification performance for four hand gestures, with an average F1-score of 0.97 ± 0.05 in offline tests. As for online gesture recognition, an average F1-score of 0.92 ± 0.09 was obtained. In the evaluation experiments, between data from 50% and 100% movement amplitude, paired t-tests showed significant differences. The experimental results indicated that the proposed system showed promise for hand rehabilitation.
Published in: IEEE Transactions on Neural Systems and Rehabilitation Engineering ( Volume: 31)
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- IEEE Keywords
- Iron ,
- Laser radar ,
- Wrist ,
- Data gloves ,
- Gesture recognition ,
- Data collection ,
- Bending
- Index Terms
- Functional Electrical Stimulation ,
- Functional Electrical Stimulation System ,
- Training Data ,
- Support Vector Machine ,
- Classification Performance ,
- Linear Discriminant Analysis ,
- K-nearest Neighbor ,
- Stroke Patients ,
- Support Vector Machine Classifier ,
- Light Detection And Ranging ,
- Patient Movement ,
- Hand Gestures ,
- Gesture Recognition ,
- Amplitude Of Motion ,
- Movement Amplitude ,
- Average F1-score ,
- Wrist Extension ,
- Concept Drift ,
- Motor Intention ,
- Hand Opening ,
- Healthy Side ,
- Gesture Classification ,
- Valid Values ,
- Support Vector Machine Algorithm ,
- Advantages Of Robustness ,
- Wrist Motion ,
- Stimulation Channels ,
- Lack Of Evaluation ,
- sEMG Signals ,
- Inertial Measurement Unit
- Author Keywords
- MeSH Terms
- Humans ,
- Upper Extremity ,
- Wrist ,
- Stroke ,
- Movement ,
- Motion ,
- Gestures ,
- Hand ,
- Electromyography ,
- Algorithms
Keywords assist with retrieval of results and provide a means to discovering other relevant content. Learn more.
- IEEE Keywords
- Iron ,
- Laser radar ,
- Wrist ,
- Data gloves ,
- Gesture recognition ,
- Data collection ,
- Bending
- Index Terms
- Functional Electrical Stimulation ,
- Functional Electrical Stimulation System ,
- Training Data ,
- Support Vector Machine ,
- Classification Performance ,
- Linear Discriminant Analysis ,
- K-nearest Neighbor ,
- Stroke Patients ,
- Support Vector Machine Classifier ,
- Light Detection And Ranging ,
- Patient Movement ,
- Hand Gestures ,
- Gesture Recognition ,
- Amplitude Of Motion ,
- Movement Amplitude ,
- Average F1-score ,
- Wrist Extension ,
- Concept Drift ,
- Motor Intention ,
- Hand Opening ,
- Healthy Side ,
- Gesture Classification ,
- Valid Values ,
- Support Vector Machine Algorithm ,
- Advantages Of Robustness ,
- Wrist Motion ,
- Stimulation Channels ,
- Lack Of Evaluation ,
- sEMG Signals ,
- Inertial Measurement Unit
- Author Keywords
- MeSH Terms
- Humans ,
- Upper Extremity ,
- Wrist ,
- Stroke ,
- Movement ,
- Motion ,
- Gestures ,
- Hand ,
- Electromyography ,
- Algorithms