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An Experimental Platform to Study the Closed-loop Performance of Brain-machine Interfaces
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An Integrated Brain-Machine Interface Platform With Thousands of Channels.

Elon Musk1, 1

  • 1Neuralink, San Francisco, CA, United States.

Journal of Medical Internet Research
|October 24, 2019
PubMed
Summary

Neuralink developed a high-bandwidth brain-machine interface with 3072 electrodes and a robotic insertion system. This scalable technology aims to overcome limitations in current brain-machine interfaces for neurological treatments.

Keywords:
brain-machine interfacemotor functionneurologysensory function

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Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Medical Devices

Background:

  • Clinical brain-machine interfaces (BMIs) show promise for neurological disorders but face adoption challenges due to limited channel counts.
  • Scalability and high bandwidth are critical for advancing BMI technology for widespread clinical use.

Purpose of the Study:

  • To present Neuralink's initial advancements in developing a scalable, high-bandwidth BMI system.
  • To detail the components and capabilities of their novel BMI technology.

Main Methods:

  • Development of ultra-flexible electrode "threads" with up to 3072 electrodes per array across 96 threads.
  • Creation of a neurosurgical robot for precise, high-speed insertion of electrode threads (6 threads/minute).
  • Design of a compact, implantable device with on-board amplification and digitization for 3072 channels.

Main Results:

  • Achieved micron-level precision insertion, avoiding vasculature and targeting specific brain regions.
  • Demonstrated a compact device package (23×18.5×2 mm³) capable of full-bandwidth data streaming via USB-C.
  • Reported a spiking yield of up to 70% in chronically implanted electrodes.

Conclusions:

  • Neuralink's approach offers unprecedented packaging density and scalability for a clinically relevant BMI.
  • The developed system addresses key limitations in current BMIs, paving the way for broader clinical adoption.
  • This technology represents a significant step toward restoring function and treating neurological disorders.