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Targeting Neuronal Fiber Tracts for Deep Brain Stimulation Therapy Using Interactive, Patient-Specific Models
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Customizing MRI-Compatible Multifunctional Neural Interfaces through Fiber Drawing.

Marc-Joseph Antonini1, Atharva Sahasrabudhe1, Anthony Tabet2

  • 1Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA.

Advanced Functional Materials
|December 20, 2021
PubMed
Summary
This summary is machine-generated.

Researchers developed new fiber drawing methods for flexible neural probes. These probes integrate electrical and optical functions for precise neural recording and modulation, advancing neuroscience tools.

Keywords:
MRIfibersmicrodrivesmultifunctional neural probesthermal drawing

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Area of Science:

  • Neuroscience
  • Materials Science
  • Biomedical Engineering

Background:

  • Scalable fabrication of multifunctional flexible fibers is crucial for neural interfaces.
  • Integrating electrical and optical modalities in fibers is limited by material constraints.

Purpose of the Study:

  • To develop novel fiber drawing techniques for advanced neural probes.
  • To overcome limitations in integrating metal electrodes with polymer waveguides.

Main Methods:

  • Iterative thermal drawing using low melting temperature indium.
  • Metal convergence drawing with high melting temperature tungsten.
  • Fabrication of multifunctional flexible neural interfaces with integrated electrodes and waveguides.

Main Results:

  • Successful fabrication of low-impedance metallic electrodes and low-loss waveguides.
  • Demonstrated chronic recording of neural activity in mice over several weeks.
  • Compatibility with microdrives for depth-specific neural circuit interrogation and MRI visualization.

Conclusions:

  • New fiber drawing methods enable advanced, multifunctional neural probes.
  • These probes facilitate precise neural recording, modulation, and chemical payload delivery.
  • Expanded applications for fiber-based neural probes in neuroscience and neuroengineering.