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Published on: March 25, 2014
Multi-finger structure and pulsed-powering operation scheme for CMOS LSI-based flexible stimulator for retinal
1Nara Institute Science and Technology, Takayama-cho 8916-5, Ikoma 630-0192, Japan. tokuda@ms.naist.jp
Summary
A novel multi-finger design enhances retinal stimulator flexibility. Pulsed-powering operation offers a safer alternative for neural stimulation, improving biological tissue safety.
Area of Science:
- Biomedical Engineering
- Neuroscience
- Materials Science
Background:
- Conventional retinal stimulators face challenges with flexibility and biocompatibility.
- Advancements in CMOS LSI technology enable complex microelectronic devices for neural interfacing.
Purpose of the Study:
- To introduce a multi-finger structure for improved flexibility in CMOS LSI-based retinal stimulators.
- To evaluate a pulsed-powering operation scheme for enhanced safety in neural stimulation.
Main Methods:
- Fabrication of a dual-finger retinal stimulator prototype.
- In-vitro retinal stimulation experiments using rabbit retinas.
- Comparative simulation of pulsed-powering versus conventional powering schemes.
Main Results:
- Demonstrated functionality of the dual-finger retinal stimulator in experiments.
- Simulation results indicate pulsed-powering is a viable alternative operation scheme.
- Pulsed-powering scheme shows potential for improved biological tissue safety.
Conclusions:
- The multi-finger design significantly enhances the flexibility of retinal stimulators.
- Pulsed-powering operation is a promising strategy for safer neural stimulation.
- This research contributes to the development of advanced, safer retinal prosthetics.