Perceptual thresholds and electrode impedance in three retinal prosthesis subjects

@article{Mahadevappa2005PerceptualTA,
  title={Perceptual thresholds and electrode impedance in three retinal prosthesis subjects},
  author={Manjunatha Mahadevappa and J. D. Weiland and Douglas Yanai and I. V. Fine and R. Greenberg and M. S. Humayun},
  journal={IEEE Transactions on Neural Systems and Rehabilitation Engineering},
  year={2005},
  volume={13},
  pages={201-206}
}
Three test subjects blind from retinitis pigmentosa were implanted with retinal prostheses as part of a FDA-approved clinical trial. The implant consisted of an extraocular unit that contained electronics for wireless data, power, and generation of stimulus current, and an intraocular unit that consisted of 16 platinum stimulating electrodes arranged in a 4 /spl times/ 4 pattern within a silicone rubber substrate. The array was held to the retina by a small tack. The stimulator was connected to… CONTINUE READING