MOBILE, REAL-TIME SIMULATOR FOR A CORTICAL VISUAL PROSTHESIS

Horace Josh, Benedict Yong, Lindsay Kleeman

Abstract

This paper presents a mobile, real-time simulator system for a cortical visual prosthesis, making use of current neurophysiological models of visuotopy. This system overcomes fundamental limitations of current simulator systems which include simplified visuotopic mapping and the lack of mobility, limiting use in open and untethered environments. A visual prosthesis simulator provides a useful demonstration and research platform for a bionic vision system. It can be used to simulate the visual results of such an implant, as well as aid in the development of algorithms and techniques that would most suitably present information to a patient. Cortical visual prostheses work by electrically stimulating the visual cortex, the part of the brain primarily responsible for vision, and eliciting visual perceptions known as ‘phosphenes’. The simulator’s main function is to translate a scene provided by a camera sensor into a low resolution form that closely mimics the phosphene pattern produced by a cortical visual prosthesis. Preliminary psychophysics testing has suggested that in some situations it can be advantageous to have four different levels of intensity rather than two. It was also found that there is a learning effect associated with continued use of the system which would need further psychophysics study.

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Paper Citation


in Harvard Style

Josh H., Yong B. and Kleeman L. (2012). MOBILE, REAL-TIME SIMULATOR FOR A CORTICAL VISUAL PROSTHESIS . In Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2012) ISBN 978-989-8425-91-1, pages 37-46. DOI: 10.5220/0003773300370046


in Bibtex Style

@conference{biodevices12,
author={Horace Josh and Benedict Yong and Lindsay Kleeman},
title={MOBILE, REAL-TIME SIMULATOR FOR A CORTICAL VISUAL PROSTHESIS},
booktitle={Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2012)},
year={2012},
pages={37-46},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003773300370046},
isbn={978-989-8425-91-1},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Biomedical Electronics and Devices - Volume 1: BIODEVICES, (BIOSTEC 2012)
TI - MOBILE, REAL-TIME SIMULATOR FOR A CORTICAL VISUAL PROSTHESIS
SN - 978-989-8425-91-1
AU - Josh H.
AU - Yong B.
AU - Kleeman L.
PY - 2012
SP - 37
EP - 46
DO - 10.5220/0003773300370046