Journal
2017 39TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC)
Volume -, Issue -, Pages 2518-2521Publisher
IEEE
DOI: 10.1109/embc.2017.8037369
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Funding
- Baden Wurttemberg Stiftung (GRIJFNS ROB-1)
- Deutsche Forschungsgemeinschaft (DFG)
- Forkine-Program of the University of Tubingen [2422-0-0]
- Bundesministerium fur Bildung and Forschung BMBE MOTORBIC [FKZ 13GW0053]
- AMORSA [FKZ 6SV7754]
- Basque Government
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Recent studies have shown the feasibility of spinal cord stimulation (SCS) for motor rehabilitation. Currently, there is an increasing interest in developing closed-loop systems employing SCS for lower-limb recovery. These closed-loop systems are based on the use of neurophysiological signals to modulate the stimulation. It is known that electromagnetic stimulation can introduce undesirable noise to the electrophysiological recordings. However, there is little evidence about how electroencephalographic (EEG) or electromyographic (EMG) activities are corrupted when a trans-spinal magnetic stimulation is applied. This paper studies the effects of magnetic SCS in EEG and EMG activity. Furthermore, a median filter is proposed to ameliorate the effects of the artifacts, and to preserve the neural activity. Our results show that SCS can affect both EEG and EMG, and that, while the median filter works well to clean the EEG activity, it did not improve the contaminations of the EMG activity. The obtained results underline the need of cleaning EMG and EEG signals contaminated by SCS, which is essential for optimal closed-loop rehabilitation.
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