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Related Experiment Video

Updated: Mar 30, 2026

Optrode Array for Simultaneous Optogenetic Modulation and Electrical Neural Recording
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Soft, stretchable, fully implantable miniaturized optoelectronic systems for wireless optogenetics.

Sung Il Park1,2, Daniel S Brenner3, Gunchul Shin1,2

  • 1Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA.

Nature Biotechnology
|November 10, 2015
PubMed
Summary

This study introduces new wireless, implantable devices for optogenetics, enabling natural movement during neural modulation. These soft, minimally invasive tools effectively control spinal cord and peripheral nervous system activity, including pain circuits.

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Area of Science:

  • Neuroscience
  • Biotechnology
  • Medical Devices

Background:

  • Optogenetics offers precise neuronal control but is limited by bulky equipment and restricted movement.
  • Existing methods require external light sources and fiber optics, hindering natural behavior during experiments and applications.

Purpose of the Study:

  • To develop and demonstrate a novel system for wireless, implantable optogenetic control that overcomes current physical limitations.
  • To enable optogenetic modulation of the spinal cord and peripheral nervous system with minimal invasiveness and preserved natural behaviors.

Main Methods:

  • Integration of thin, mechanically soft neural interfaces with stretchable, wireless radio frequency power and control systems.
  • Development of two device form factors: stretchable film appliqués for peripheral nerves and flexible filaments for the spinal epidural space.
  • Histological analysis to assess tissue compatibility for chronic implantation.

Main Results:

  • Successful optogenetic modulation of both peripheral nerves and the spinal cord was achieved using the developed wireless, implantable devices.
  • Demonstrated efficacy in modulating peripheral and spinal pain circuitry, highlighting the technology's therapeutic potential.
  • Histological data indicated minimal tissue damage, supporting the feasibility of chronic use.

Conclusions:

  • The developed soft, wireless, and implantable optogenetic devices significantly reduce physical constraints, allowing for natural behaviors.
  • This technology provides a minimally invasive platform for optogenetic neuromodulation of the spinal cord and peripheral nervous system.
  • The findings support the broad applicability of these devices in neuroscience research and future clinical translation for conditions beyond the brain.