Peripheral nerve conduction recorded by a micro gradiometer system (micro-SQUID) in humans
Abstract
We developed a new multi (twelve) -channel gradiometer system with the smallest and highest quality superconducting quantum interference device (micro-SQUID). A very small distance (3.80 mm) between the sensor coils and the skin provides quite high spatial resolution. The actual whole image of the sensory nerve action fields (NAF) of the human median nerve at the wrist were successfully recorded following digital nerve stimulation by using the micro-SQUID. The NAF showed the biphasic waveform at each of the 12 channels, and the isomagnetic field map clearly showed the moving quadrupole pattern. The quadrupole comprised a dipole for depolarization followed by another dipole with the opposite direction for repolarization. The polarized length of the nerve obtained by reconstructing the magnetic field maps was approximately 17 cm, and the magnetic field complex moved along the nerve from the distal to the proximal part of the wrist at 58.7 m/s.
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Extremely weak magnetic fields generated by the ion flows of evoked compound nerve action potentials can be detected using SQUID sensors with high spatial and temporal resolution.
“Extremely weak magnetic fields generated by the ion flows of evoked compound nerve action potentials can be detected using superconducting quantum interference device (SQUID) sensors with high spatial and temporal resolution”
From A critical review of interfaces with the peripheral nervous system for the control of neuroprostheses and hybrid bionic systems (2005) · cites this paper as Hoshiyama et al., 1999
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Navarro, X., Krueger, T. B., Lago, N., Micera, S., Stieglitz, T., & Dario, P. (2005) · Journal of the Peripheral Nervous System · doi:10.1111/j.1085-9489.2005.10303.x · Cited by 845 · see citing works
- Authors
- Hoshiyama, M., Kakigi, R., & Nagata, O.
- Affiliations
- National Institute for Physiological Sciences (JP)
- Corresponding author
- Hoshiyama, Minoru
- ORCID
- Hoshiyama, Minoru
- Venue
- Neuroscience Letters
- Publisher
- Elsevier BV
- Published
- 1999-09
- Volume
- 272
- Issue
- 3
- Pages
- 199-202
- ISSN
- 0304-3940 (ISSN-L)
- OpenAlex
- W2060878950
- Cited by
- 23
- References
- 0
- Citations by year
- 2025: 1 · 2023: 1 · 2022: 2 · 2019: 3 · 2017: 1 · 2013: 1
- FWCI
- 1.60
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Neuroscience Letters (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Ministry of Education, Culture, Sports, Science and Technology (C-10670614)
- Topics
- Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Peripheral Nerve Disorders
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Magnetic Field Sensors Techniques
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
- Keywords
- peripheral nerve conduction, micro-SQUID, superconducting quantum interference devices, median nerve, magnetic field mapping
- MeSH terms
- Adult, Electric Stimulation, Electromagnetic Fields, Electrophysiology, Female, Fingers, Humans, Male, Median Nerve, Neural Conduction, Peripheral Nerves, Wrist
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Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
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