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Patterned wireless transcranial optogenetics generates artificial perception.

Mingzheng Wu1,2, Yiyuan Yang3,4,5,6,7, Jinglan Zhang2

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Researchers developed a miniaturized brain-computer interface to wirelessly create artificial perceptions. This technology enables direct neural stimulation for advanced brain-machine communication and understanding brain perception.

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Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Optogenetics

Background:

  • Developing brain-machine interfaces (BMIs) requires creating artificial neural inputs without relying on traditional sensory pathways.
  • A key challenge is establishing stable, minimally invasive, and wirelessly controlled platforms for artificial perceptual feedback.

Purpose of the Study:

  • To demonstrate a miniaturized, implantable transcranial optogenetic neural stimulator for real-time, wireless patterning of cortical ensembles.
  • To investigate the feasibility of generating artificial perceptions via direct neural stimulation.

Main Methods:

  • Designed and validated a miniaturized, fully implantable transcranial optogenetic neural stimulator.
  • Utilized experimentally validated numerical simulations for light and heat propagation analysis.
  • Assessed neuronal responses through in vivo electrophysiology and molecular methods.
  • Conducted cue discrimination tasks during operant learning in mice.

Main Results:

  • Successfully demonstrated the wireless generation of artificial percepts perceived by mice.
  • Showcased that spatial distance and sequential order in cortical networks predict discrimination performance.
  • Validated the stimulator's efficacy in eliciting measurable neuronal responses and behavioral outcomes.

Conclusions:

  • This study presents a significant advance in all-optical brain-machine communication by enabling wireless, real-time artificial perception generation.
  • The developed technology expands the understanding of artificially patterned neural activity and its perception.
  • These findings pave the way for next-generation BMIs capable of mediating artificial perceptual feedback.