Cited by 43Neuroscience and Neural EngineeringAdvanced Sensor and Energy Harvesting MaterialsEEG and Brain-Computer Interfaces

A Highly Selective 3D Spiked Ultraflexible Neural (SUN) Interface for Decoding Peripheral Nerve Sensory Information

Wang, Jiahui, Thow, Xin Yuan, Wang, Hao, Lee, Sanghoon, Voges, Kai, Thakor, Nitish V., Yen, Shih‐Cheng, Lee, Chengkuo·2018·Advanced Healthcare Materials

Abstract

Artificial sensors on the skin are proposed as a way to capture information that can be used in intracortical microstimulation or peripheral intraneural stimulation to restore sensory feedback to persons with tetraplegia. However, the ability of these artificial sensors to replicate the density and complexity of the natural mechanoreceptors is limited. One relatively unexplored approach is to make use of the signals from surviving tactile and proprioceptive receptors in existing limbs by recording from their transmitting axons within the primary sensory nerves. Here, a novel spiked ultraflexible neural (SUN) interface that is implanted into the peripheral nervous system to capture sensory information from these mechanoreceptors in acute rat experiments is described. The novel 3D design, which integrates spiked structures for intrafascicular nerve recording with an ultraflexible substrate, enables a unique conformal interface to the target nerve. With the high‐quality recording (average signal‐to‐noise‐ratio of 1.4) provided by the electrode, tactile from proprioceptive stimuli can be differentiated in terms of the firing rate. In toe pinching experiments, high spatial resolution classification can be achieved with support vector machine classifier. Further work remains to be done to assess the chronic recording capability of the SUN interface.

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Registry

Crossref · 10.1002/adhm.201700987

Cites

41 of 41 references verified0 citation errors · 0 not checkable

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  • The SUN interface enabled deformation following nerve movements and penetrating spiked electrodes for intra-fascicular recordings.

    “This enabled the SUN interface to deform following nerve movements and penetrating spiked electrodes for intra-fascicular recordings.”
  • In vivo experiments on the rat sciatic nerve detected small amplitude electroneurogram (ENG) signals with a high signal-to-noise ratio (SNR).

    “They performed in vivo experiments on the rat sciatic nerve to detect small amplitude electroneurogram (ENG) signals with a high signal-to-noise ratio (SNR).”
  • The SUN interface could differentiate tactile from proprioceptive stimuli and classify the location of the stimulus with high spatial resolution.

    “They could differentiate tactile from proprioceptive stimuli and classify the location of the stimulus with a high spatial resolution (Figure 7f).”
  • Wang et al. fabricated a spiked ultra-flexible neural (SUN) interface for recording from the peripheral nervous system.

    “Wang et al. [247] fabricated a spiked ultra-flexible neural (SUN) interface for recording from the peripheral nervous system.”
  • Advanced neuroprostheses require neural interfaces capable of high quality recording from efferent signals to record intention of movements and reliable stimulation to provide sensory feedback to the brain.

    “For instance, advanced neuroprostheses require neural interfaces capable of the high quality of recording from efferent signals to record intention of any movements as well as capable of reliable stimulation to provide sensory feedback to the brain.99,100”

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Authors
Wang, J., Thow, X. Y., Wang, H., Lee, S., Voges, K., Thakor, N. V., Yen, S., & Lee, C.
Affiliations
National University of Singapore (SG)
Corresponding author
  • Thakor, Nitish V.
  • Yen, Shih‐Cheng
  • Lee, Chengkuo
Venue
Advanced Healthcare Materials
Publisher
Wiley
Published
2017-12-04
Volume
7
Issue
5
ISSN
  • 2192-2640 (ISSN-L)
  • 2192-2659
OpenAlex
W2774278772
Cited by
43
References
41
Citations by year
2026: 1 · 2025: 5 · 2024: 2 · 2023: 7 · 2022: 7 · 2021: 6 · 2020: 6 · 2019: 6 · 2018: 3
FWCI
2.00
Type
journal article
Language
en
Open access
closed
Locations
  • Advanced Healthcare Materials (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Research Foundation Singapore (NRF‐CRP10‐2012‐01)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
  • Physical Sciences › Engineering › Biomedical Engineering › Advanced Sensor and Energy Harvesting Materials
  • Life Sciences › Neuroscience › Cognitive Neuroscience › EEG and Brain-Computer Interfaces
Keywords
peripheral nerve recording, mechanoreceptors, tetraplegia, intracortical microstimulation, signal-to-noise ratio
MeSH terms
Animals, Axons, Electrodes, Implanted, Mechanoreceptors, Synaptic Transmission, Peripheral Nerves, Proprioception, Rats, Sprague-Dawley, Rats

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