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The Neurochip BCI: towards a neural prosthesis for upper limb function.

Andrew Jackson1, Chet T Moritz, Jaideep Mavoori

  • 1Department of Physiology and Biophysics, University of Washington, Seattle, WA 98195, USA. jacksona@u.washington.edu

IEEE Transactions on Neural Systems and Rehabilitation Engineering : a Publication of the IEEE Engineering in Medicine and Biology Society
|June 24, 2006
PubMed
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This study introduces the Neurochip Brain-Computer Interface (BCI), a novel neural prosthetic. It translates brain activity into electrical stimuli, potentially restoring function by bypassing damaged neural pathways.

Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Neural Engineering

Background:

  • Brain-Computer Interfaces (BCIs) offer potential for neural prosthetics.
  • Current BCIs require further development for autonomous operation and direct neural application.

Purpose of the Study:

  • To develop and test the Neurochip BCI, an autonomously operating interface.
  • To assess the feasibility of using cortical activity to control spinal stimulation for motor function restoration.

Main Methods:

  • The Neurochip BCI was implanted in monkeys to record neural activity from the primary motor cortex.
  • Simultaneous recording of electromyogram (EMG) activity from arm muscles.
  • Microstimulation of the cervical spinal cord was performed in anesthetized monkeys.

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Main Results:

  • Continuous recording of single neuron activity in the motor cortex for several weeks.
  • Correlation found between cortical activity and arm muscle EMG during free behavior.
  • Spinal microstimulation evoked coordinated arm and hand movements, including muscle synergies.

Conclusions:

  • The Neurochip BCI shows promise as a direct neural prosthetic.
  • Cortical neuron-controlled spinal microstimulation could compensate for corticospinal damage.
  • This technology could form the basis for new treatments for motor impairments.