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Findings from Chronic Optic Nerve and Cortical Stimulation

  • Edward M. Schmidt
Chapter

Abstract

This chapter reviews the experiments that have produced visual sensations in humans through electrical stimulation of the central nervous system. Initially, surface stimulation of the visual cortex, provided insight into how electrical stimulation of V1 could possibly provide a visual prosthesis for the blind. Intracortical microstimulation was then investigated that would allow lower power stimulation and increased density of microelectrodes. The stimulation of the optic nerve has also been investigated as a possible site for a visual prosthesis.

The next section is dedicated to what is known and what needs to be done for the development of a visual prosthesis.

The following section examines current research efforts directed towards the development of a visual prosthesis. They include optic nerve stimulation, cortical surface stimulation and intracortical stimulation of visual cortex. The CORTIVIS Program is a comprehensive development of an intracortical visual prosthesis. The lateral geniculate nucleus is also being studied as a site for a visual prosthesis.

The final section of this chapter deals with the developments that are needed for a functional visual prosthesis. They include microelectrode arrays, stimulation hardware, and low power image sensing and processing circuitry that can control the stimulators.

Keywords

Optic Nerve Visual Cortex Electrode Array Lateral Geniculate Nucleus Microelectrode Array 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Abbreviations

2D

Two dimensional

3D

Three dimensional

EIC

EIC laboratories

HMRI

Huntington Medical Research Institute

ICMS

Intracortical microstimulation

IIT

Illinois Institute of Technology

LGN

Lateral geniculate nucleus

MIPS

Multimode digital image sensor

MIT

Massachusetts Institute of Technology

NIH

National Institutes of Health

NY

New York

UC

University of Chicago

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.National Institutes of HealthBethesdaUSA

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