An Attention-based Bidirectional LSTM Model for Continuous Cross-subject Estimation of Knee Joint Angle during Running from sEMG Signals

Conference paper


Zangene, A., Samuel, O., Abbasi, A., Nazarpour, K., McEwan, A. and Li, G. 2023. An Attention-based Bidirectional LSTM Model for Continuous Cross-subject Estimation of Knee Joint Angle during Running from sEMG Signals. 45th Annual International Conference of the IEEE, Engineering in Medicine and Biology Society. IEEE. https://doi.org/10.1109/EMBC40787.2023.10340791
AuthorsZangene, A., Samuel, O., Abbasi, A., Nazarpour, K., McEwan, A. and Li, G.
TypeConference paper
Abstract

Running is an essential locomotion activity that plays a critical role in everyday life and exercise activities and may be impeded by joint disease and neurological impairments. Accurate and robust estimation of joint kinematics via surface electromyogram (sEMG) signals provides a human-machine interaction-based method that can be used to adequately control rehabilitation robots while performing complex movements such as running for motor function restoration in affected persons. To this end, this paper proposes a novel deep learning-based model (AM-BiLSTM) that integrates an attention mechanism (AM) and a bidirectional long short-term memory (BiLSTM) network. The proposed method was evaluated using knee joint kinematic and sEMG signals of fourteen subjects who performed running at 2 m/s speed. The proposed model’s generalizability was tested for within- and cross-subject scenarios and compared with standard LSTM and multi-layer perceptron (MLP) networks in terms of normalized root-mean-square error and correlation coefficient evaluation metrics. Based on the statistical tests, the proposed AM-BiLSTM model significantly outperformed the LSTM and MLP methods in both within- and cross-subject scenarios (p<0.05) and achieved state-of-the-art performance.

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KeywordsLower Limb Rehabilitation; Prosthesis; Electromyogram; Pattern Recognition
Year2023
Conference45th Annual International Conference of the IEEE, Engineering in Medicine and Biology Society
PublisherIEEE
ISSN2694-0604
Digital Object Identifier (DOI)https://doi.org/10.1109/EMBC40787.2023.10340791
Web address (URL)https://www.embs.org/event/embc-embs-org-2023/
Accepted author manuscript
License
All rights reserved
File Access Level
Open
Journal citationpp. 1-5
ISBN9798350324471
Web address (URL) of conference proceedingshttps://embc.embs.org/2023/
Output statusPublished
Publication dates
Online11 Dec 2023
Publication process dates
AcceptedApr 2023
Deposited18 Dec 2023
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