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Start Over Topic optic nerve Journal 2006 international symposium on biophotonics, nanophotonics and metamaterials Publisher ieee
2 results

1. Micro-stimulator Design for Visual Prosthesis based on Optic Nerve Stimulation

Author

Jia Wang, Ying Zhao, Xinyu Chai, and Qiushi Ren

Subjects
Phosphene, Materials science, genetic structures, Visual prosthesis, Optic nerve, Single pulse, ON - Optic nerve, Stimulation, Neurophysiology, eye diseases, Visual field, Biomedical engineering
Abstract

A micro-stimulator design for visual prosthesis based on optic nerve stimulation is presented in this paper. The micro-stimulator is designed to control 64 electrodes, offer single pulse or multiple pulses train which are variable range such as from 1 muA to 2 mA current amplitudes, from 20 mus to 400 mus duration, from 0 to 350 Hz frequency. The micro current pulses transmitting to the penetrating multi-electrode-arrays will stimulate optic nerve to elicit phosphenes within visual field.

Published
2006

2. Image Processing Strategies Dedicated To the Optic Nerve Stimulation

Author

Wei Yu, Yukun Tian, Qiushi Ren, and Xinyu Chai

Subjects
genetic structures, Computer science, business.industry, Visual space, Image processing, Neurophysiology, eye diseases, Edge detection, Optic nerve, Computer vision, sense organs, Enhanced Data Rates for GSM Evolution, Artificial intelligence, Neural coding, business, Histogram equalization
Abstract

The goal of the optic nerve stimulation is to place multielectrode electrodes around the optic nerve and evoke multiplephosphenes covering the entire visual space by using complex patterns of electrical stimulation. This paper mainly studies the best image processing strategies applying to the optic nerve stimulation. Four image processing strategies that could be used in the optic nerve stimulation such as histogram equalization, edge detection, edge following, binary morphological operations. As we learn more about the neural coding of visual system, the better image processing strategies will be applied to the artificial vision.

Published
2006