Cited by 63EEG and Brain-Computer InterfacesMuscle activation and electromyography studiesStroke Rehabilitation and Recovery

Prediction of gait intention from pre-movement EEG signals: a feasibility study

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Shafiul Hasan, S. M., Siddiquee, Masudur R., Atri, Roozbeh, Ramon, Rodrigo, Marquez, J. Sebastian, Bai, Ou·2020·Journal of NeuroEngineering and Rehabilitation

Abstract

Background: Prediction of Gait intention from pre-movement Electroencephalography (EEG) signals is a vital step in developing a real-time Brain-computer Interface (BCI) for a proper neuro-rehabilitation system. In that respect, this paper investigates the feasibility of a fully predictive methodology to detect the intention to start and stop a gait cycle by utilizing EEG signals obtained before the event occurrence. Methods: An eight-channel, custom-made, EEG system with electrodes placed around the sensorimotor cortex was used to acquire EEG data from six healthy subjects and two amputees. A discrete wavelet transform-based method was employed to capture event related information in alpha and beta bands in the time-frequency domain. The Hjorth parameters, namely activity, mobility, and complexity, were extracted as features while a two-sample unpaired Wilcoxon test was used to get rid of redundant features for better classification accuracy. The feature set thus obtained was then used to classify between ’walk vs. stop’ and ’rest vs. start’ classes using support vector machine (SVM) classifier with RBF kernel in a ten-fold cross-validation scheme. Results: Using a fully predictive intention detection system, 76.41±4.47% accuracy, 72.85±7.48% sensitivity, and 79.93±5.50% specificity were achieved for ’rest vs. start’ classification. While for ’walk vs. stop’ classification, the obtained mean accuracy, sensitivity, and specificity were 74.12±4.12%, 70.24±6.45%, and 77.78±7.01% respectively. Overall average True Positive Rate achieved by this methodology was 72.06±8.27% with 1.45 False Positives/min. Conclusion: Extensive simulations and resulting classification results show that it is possible to achieve statistically similar intention detection accuracy using either only pre-movement EEG features or trans-movement EEG features. The classifier performance shows the potential of the proposed methodology to predict human movement intention exclusively from the pre-movement EEG signal to be applied in real-life prosthetic and neuro-rehabilitation systems.

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  1. [11]Kornhuber HH Deecke L Changes in the brain potential in voluntary movements and passive movements in man: readiness potential and reafferent potentials, Pflugers Archiv fur die gesamte Physiologie des Menschen und der Tiere 1965 284 1 17 14341490

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Authors
Shafiul Hasan, S. M., Siddiquee, M. R., Atri, R., Ramon, R., Marquez, J. S., & Bai, O.
Affiliations
Florida International University (US)
Venue
Journal of NeuroEngineering and Rehabilitation
Published
2020-04-16
Volume
17
Issue
1
Pages
50-50
ISSN
1743-0003 (ISSN-L)
OpenAlex
W3016642122
Cited by
63
References
67
Citations by year
2026: 7 · 2025: 8 · 2024: 12 · 2023: 10 · 2022: 14 · 2021: 7 · 2020: 5
FWCI
4.84
Type
journal article
Language
en
Open access
Locations
  • Journal of NeuroEngineering and Rehabilitation (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Science Foundation (1552163)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › EEG and Brain-Computer Interfaces
  • Physical Sciences › Engineering › Biomedical Engineering › Muscle activation and electromyography studies
  • Health Sciences › Medicine › Rehabilitation › Stroke Rehabilitation and Recovery
Keywords
brain-computer interface, neurorehabilitation, amputees, discrete wavelet transform, Hjorth parameters, feature selection, support vector machine, alpha and beta bands, sensorimotor cortex, prosthetic control
MeSH terms
Adult, Amputees, Electroencephalography, Feasibility Studies, Female, Humans, Male, Middle Aged, Movement, Signal Processing, Computer-Assisted, Somatosensory Cortex, Intention, Young Adult, Support Vector Machine, Brain-Computer Interfaces

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