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Related Experiment Videos

Cortical activation via an implanted wireless retinal prosthesis.

Peter Walter1, Zoltán F Kisvárday, Michael Görtz

  • 1Department of Ophthalmology, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany. pwalter@ukaachen.de

Investigative Ophthalmology & Visual Science
|April 27, 2005
PubMed
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This study shows a wireless retinal implant can activate the cat

Area of Science:

  • Neuroscience
  • Biomedical Engineering
  • Ophthalmology

Background:

  • Retinal prostheses aim to restore vision.
  • Wireless technology offers advantages for implantable devices.

Purpose of the Study:

  • To demonstrate wireless-controlled retinal implant activation.
  • To show local cortical activation in the visual cortex.

Main Methods:

  • Developed a wireless-controlled, implantable retinal prosthesis.
  • Used radiofrequency for wireless power and signal transfer.
  • Recorded cortical activation using optical imaging of intrinsic signals.

Main Results:

  • Successfully implanted and activated the device in cats.

Related Experiment Videos

  • Demonstrated wireless activation via radiofrequency.
  • Observed retinotopic shifts in cortical activation correlating with electrode stimulation.

    • Conclusions:

    • The wireless retinal implant successfully induced retinotopic activation.
    • This technology shows promise for vision restoration.