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Related Experiment Video

Updated: Jan 1, 2026

Implantation and Control of Wireless, Battery-free Systems for Peripheral Nerve Interfacing
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Fully implantable neural recording and stimulation interfaces: Peripheral nerve interface applications.

Ashlesha Deshmukh1, Logan Brown2, Mary F Barbe3

  • 1Triangle Biosystems, International, Durham, NC, United States.

Journal of Neuroscience Methods
|December 22, 2019
PubMed
Summary

We developed a miniaturized wireless neural interface for freely moving animals, enabling continuous electrophysiological recording and stimulation. This technology supports long-term chronic studies and advancements in bioelectronic therapies.

Keywords:
Assistive technologyBrainmachine interfaceClosed-loop stimulationElectrical stimulationHermeticImplantable neural interfaceIn vivo electrophysiologyNeural recordingNeural stimulationNeuromodulationNeuroprostheticOptogenetic stimulationPeripheral nerve interfacesTelemetryWireless communication

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Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Implantable Devices

Background:

  • Peripheral nerve interfacing is crucial for neural signal investigation and therapeutic interventions.
  • Advancements in electrode arrays and wireless systems are needed for in-vivo electrophysiology.
  • Current limitations necessitate improved technologies for chronic, unrestrained studies.

Purpose of the Study:

  • To present a fully implantable, programmable, miniaturized wireless stimulation and recording device.
  • To enable continuous, long-term electrophysiological and behavioral studies in freely moving small animals.
  • To advance the field of neural interfacing for research and bioelectronic medical therapies.

Main Methods:

  • Developed implantable wireless devices with up to 128 recording channels (50kHz sampling) and 15 stimulation channels (±4 mA).
  • Utilized induction charging cages for continuous power supply, allowing unimpeded animal movement.
  • Employed biocompatible hermetic packaging for long-term stability of implantable capsules.

Main Results:

  • Successfully recorded electromyographs wirelessly from macaque and rat leg muscles during behavioral tasks.
  • Demonstrated simultaneous stimulation and recording capabilities when interfaced with vagus and pelvic nerves.
  • Validated the system's capacity for high-channel count recording and stimulation without signal quality compromise.

Conclusions:

  • The wireless neural interface offers high-channel density and stimulation capabilities, maintaining signal integrity.
  • Induction charging and transceiver technology enable simultaneous multi-animal experiments.
  • This customizable, wireless power-based system provides a robust, implantable neural interface for studying bioelectronic medical therapies.