Cited by 53Neuroscience and Neural EngineeringPain Management and TreatmentMuscle activation and electromyography studies

Microstimulation of primary afferent neurons in the L7 dorsal root ganglia using multielectrode arrays in anesthetized cats: thresholds and recruitment properties

Open access
Gaunt, R A, Hokanson, J A, Weber, D J·2009·Journal of Neural Engineering

Abstract

Current research in motor neural prosthetics has focused primarily on issues related to the extraction of motor command signals from the brain (e.g. brain-machine interfaces) to direct the motion of prosthetic limbs. Patients using these types of systems could benefit from a somatosensory neural interface that conveys natural tactile and kinesthetic sensations for the prosthesis. Electrical microstimulation within the dorsal root ganglia (DRG) has been proposed as one method to accomplish this, yet little is known about the recruitment properties of electrical microstimulation in activating nerve fibers in this structure. Current-controlled microstimulation pulses in the range of 1-15 microA (200 micros, leading cathodic pulse) were delivered to the L7 DRG in four anesthetized cats using penetrating microelectrode arrays. Evoked responses and their corresponding conduction velocities (CVs) were measured in the sciatic nerve with a 5-pole nerve cuff electrode arranged as two adjacent tripoles. It was found that in 76% of the 69 electrodes tested, the stimulus threshold was less than or equal to 3 microA, with the lowest recorded threshold being 1.1 microA. The CVs of afferents recruited at threshold had a bimodal distribution with peaks at 70 m s(-1) and 85 m s(-1). In 53% of cases, the CV of the response at threshold was slower (i.e. smaller diameter fiber) than the CVs of responses observed at increasing stimulation amplitudes. In summary, we found that microstimulation applied through penetrating microelectrodes in the DRG provides selective recruitment of afferent fibers from a range of sensory modalities (as identified by CVs) at very low stimulation intensities. We conclude that the DRG may serve as an attractive location from which to introduce surrogate somatosensory feedback into the nervous system.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1088/1741-2560/6/5/055009

Cites

49 of 49 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Electrode arrays can be implanted in the dorsal root ganglia, located close to the spinal cord.

    “Rather than targeting the nerve at a location along the residual limb, electrode arrays can also be implanted in the dorsal root ganglia (DRG), located close to the spinal cord (Gaunt et al., 2009).”

    From Biomimetic approaches to bionic touch through a peripheral nerve interface (2015) · cites this paper as Gaunt et al., 2009

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Gaunt, R. A., Hokanson, J. A., & Weber, D. J.
Affiliations
University of Pittsburgh (US)
Venue
Journal of Neural Engineering
Published
2009-09-01
Volume
6
Issue
5
Pages
055009
ISSN
  • 1741-2552 (ISSN-L)
  • 1741-2560
OpenAlex
W2053762946
Cited by
53
References
49
Citations by year
2026: 1 · 2025: 1 · 2024: 2 · 2023: 2 · 2022: 3 · 2021: 6 · 2020: 2 · 2019: 5 · 2018: 5 · 2017: 2 · 2016: 3 · 2015: 2 · 2014: 5 · 2013: 1 · 2012: 6
FWCI
1.80
Type
journal article
Language
en
Open access
Locations
  • Journal of Neural Engineering (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (5r01eb007749-04)
  • National Institute of Neurological Disorders and Stroke (R21NS056136)
  • National Institute of Biomedical Imaging and Bioengineering (1R01EB007749, R01 EB007749)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
  • Health Sciences › Medicine › Anesthesiology and Pain Medicine › Pain Management and Treatment
  • Physical Sciences › Engineering › Biomedical Engineering › Muscle activation and electromyography studies
Keywords
electrical microstimulation, dorsal root ganglia, primary afferent neurons, somatosensory feedback, stimulation threshold, fiber recruitment, conduction velocity, cuff electrodes, sciatic nerve, tactile perception
MeSH terms
Action Potentials, Animals, Cats, Differential Threshold, Electric Stimulation, Electrodes, Implanted, Equipment Design, Evoked Potentials, Ganglia, Spinal, Microelectrodes, Neurons, Afferent, Recruitment, Neurophysiological, Equipment Failure Analysis

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review