Localization and Recovery of Peripheral Neural Sources With Beamforming Algorithms
Open accessAbstract
The peripheral nervous system carries sensory and motor information that could be useful as command signals for function restoration in areas such as neural prosthetics and functional electrical stimulation (FES). Nerve cuff electrodes provide a robust and safe technique for recording nerve signals. However, a method to separate and recover signals from individual fascicles is necessary. Prior knowledge of the electrode geometry was used to develop an algorithm which assumes neither signal independence nor detailed knowledge of the nerve's geometry/conductivity, and is applicable to any wide-band near-field situation. When used to recover fascicular activities from simulated nerve cuff recordings in a realistic human femoral nerve model, this beamforming algorithm separates signals as close as 1.5 mm with cross-correlation coefficient, R > 0.9 (10% noise). Ten simultaneous signals could be recovered from individual fascicles with only a 20% decrease in R compared to a single signal. At high noise levels (40%), sources were localized to 180 +/- 170 microm in the 12 x 3 mm cuff. Localizing sources and using the resulting positions in the recovery algorithm yielded R = 0.66 +/- 0.10 in 10% noise for five simultaneous muscle-activation signals from synergistic fascicles. These recovered signals should allow natural, robust, closed-loop control of multiple degree-of-freedom prosthetic devices and FES systems.
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Data from multiple electrodes near the nerve can be used to estimate the origin of the signal using signal processing techniques such as spatial filtering.
“In addition, the data from multiple electrodes near the nerve can be used to estimate the origin of the signal using various signal processing techniques, like spatial filtering (Wodlinger and Durand, 2009).”
From Update on Peripheral Nerve Electrodes for Closed-Loop Neuroprosthetics (2018) · cites this paper as Wodlinger and Durand, 2009
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- Authors
- Wodlinger, B., & Durand, D. M.
- Affiliations
- Case Western Reserve University (US)
- Venue
- IEEE Transactions on Neural Systems and Rehabilitation Engineering
- Published
- 2009-10
- Volume
- 17
- Issue
- 5
- Pages
- 461-468
- ISSN
- 1534-4320 (ISSN-L)
- 1558-0210
- PMC
- PMC3568387
- OpenAlex
- W2106364212
- Cited by
- 73
- References
- 2
- Citations by year
- 2026: 1 · 2025: 2 · 2023: 2 · 2022: 6 · 2021: 2 · 2020: 8 · 2019: 6 · 2018: 6 · 2017: 3 · 2016: 9 · 2015: 2 · 2014: 7 · 2013: 1 · 2012: 4
- FWCI
- 2.49
- Type
- journal article
- Language
- en
- Open access
- green
- europepmc.org
- Locations
- IEEE Transactions on Neural Systems and Rehabilitation Engineering (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institute of Neurological Disorders and Stroke (R01NS032845)
- Topics
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
- Physical Sciences › Engineering › Biomedical Engineering › Muscle activation and electromyography studies
- Life Sciences › Neuroscience › Cognitive Neuroscience › EEG and Brain-Computer Interfaces
- Keywords
- beamforming, cuff electrodes, peripheral nerve recording, functional electrical stimulation, neuroprosthetics, feedback control
- MeSH terms
- Action Potentials, Algorithms, Animals, Computer Simulation, Electrodes, Implanted, Equipment Design, Humans, Models, Neurological, Peripheral Nerves, Sensitivity and Specificity, Reproducibility of Results, Computer-Aided Design, Equipment Failure Analysis
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