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Updated: Nov 11, 2025

Preparation of Peripheral Nerve Stimulation Electrodes for Chronic Implantation in Rats
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Hydrogel-based electrodes for selective cervical vagus nerve stimulation.

Charles C Horn1,2,3, Mats Forssell4, Michael Sciullo2

  • 1Department of Medicine, University of Pittsburgh, Pittsburgh, PA, United States of America.

Journal of Neural Engineering
|March 30, 2021
PubMed
Summary
This summary is machine-generated.

Selective cervical vagus nerve stimulation (VNS) using novel cuff electrodes shows promise for treating various diseases. This approach modulates specific nerve pathways, reducing side effects for conditions like gastrointestinal and cardiovascular disorders.

Keywords:
bioelectronic medicineelectroceuticalsneuromodulationvagus nervevagus nerve stimulation

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Area of Science:

  • Neuromodulation
  • Biomedical Engineering
  • Vagal Nerve Stimulation

Background:

  • Vagus nerve stimulation (VNS) offers therapeutic potential for numerous conditions by modulating organ communication.
  • Current VNS methods use non-selective electrodes, limiting therapeutic precision.
  • Targeting distal vagal branches is ideal but surgically challenging.

Purpose of the Study:

  • To demonstrate selective cervical VNS using multi-contact cuff electrodes.
  • To enable targeted modulation of specific vagal nerve pathways.
  • To reduce off-target effects associated with conventional VNS.

Main Methods:

  • Development of flexible cuff electrodes with multiple contacts.
  • Utilizing an adhesive hydrogel wrap for robust nerve interface.
  • Validation in a rat model to assess neural activity and cardiovascular response.

Main Results:

  • Successful demonstration of selective cervical VNS in a rat model.
  • Evidence of neural activity in the abdominal vagus nerve.
  • Limited impact on cardiovascular parameters (heart rate, blood pressure).

Conclusions:

  • Selective cervical VNS is a viable therapeutic approach.
  • This method allows for targeted modulation of distal vagal nerve branches.
  • Potential applications include gastrointestinal, metabolic, inflammatory, cardiovascular, and respiratory diseases.