NDLI: FPGA design of a pulse encoder for optoelectronic neural stimulation and recording arrays

Content Provider	IEEE Xplore Digital Library
Author	Al Yaman, M. Ghani, A. Bystrov, A. Degenaar, P. Maaskant, P.
Copyright Year	2013
Description	Author affiliation: Dept. of Electr., & Electron. Eng., Newcastle Univ., Newcastle upon Tyne, UK (Al Yaman, M.; Ghani, A.; Bystrov, A.; Degenaar, P.) \|\| Tyndall Inst., Univ. of Cork, Cork, Ireland (Maaskant, P.)
Abstract	This paper presents a new control methodology for high throughput optoelectronic/optogenetic prostheses. Optogenetic prostheses use a gene therapy method to photosensitize neurons, for which the most efficient stimulation is short pulses of just enough high intensity light. We have previously demonstrated that stimulation can be achieved with combined CMOS-Nitride micro-photonic systems. We have now explored operating schemes to provide accurate short pulses of high radiance light in an intensity modulation scheme for the purpose of retinal prosthesis. We have shown that by utilizing the sparse nature of retinal code, it is possible to have an adaptive system which minimizes information transfer compared to raster or purely asynchronous bit serial modes. We are thus being able to provide more dynamic and thus intensity accuracy. We have implemented our schemes on an FPGA to measure relative modes.
Starting Page	190
Ending Page	193
File Size	1305986
Page Count	4
File Format	PDF
ISBN	9781479914715
DOI	10.1109/BioCAS.2013.6679671
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-10-31
Publisher Place	Netherlands
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Visualization neurobionics Neurons FPGA Retina Registers bionics Controller biomedical retinal prosthesis visual prosthesis optogenetic neural prosthesis optoelectronics Field programmable gate arrays Prosthetics Clocks
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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