Abstract
The Monash Vision Group is developing a bionic eye based on an implantable cortical visual prosthesis. The visual prosthesis aims to restore vision to blind people by electrical stimulation of the visual cortex of the brain. Due to the expected naivety of early prostheses, there is need for the development of innovative pre-processing of scene information in order to provide the most intuitive representation to user. However, in order to explore solutions to this need, prior to availability of functional implants, a simulator system is required. In this paper, we present a portable, real-time simulator and psychophysical evaluation platform that we have developed called the 'HatPack'. It makes use of current neurophysiological models of visuotopy and overcomes limitations of existing systems. Using the HatPack, which is compiled into a neat, wearable package, we have conducted preliminary psychophysics testing, which has shown the significance of available greyscale intensity levels and frame rates. A learning effect associated with repeated trials was also made evident.
Original language | English |
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Title of host publication | Biomedical Engineering Systems and Technologies - 5th International Joint Conference, BIOSTEC 2012, Revised Selected Papers |
Subtitle of host publication | Vilamoura, Portugal; February 1-4, 2012 |
Editors | Joaquim Gabriel, Jan Schier, Sabine Van Huffel, Emmanuel Conchon, Carlos Correia, Ana Fred, Hugo Gamboa |
Place of Publication | Heidelberg Germany |
Publisher | Springer-Verlag London Ltd. |
Pages | 51-67 |
Number of pages | 17 |
ISBN (Electronic) | 9783642382567 |
ISBN (Print) | 9783642382550 |
DOIs | |
Publication status | Published - 2013 |
Event | International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC) 2012 - Vilamoura, Algarve, Portugal Duration: 1 Feb 2012 → 4 Feb 2012 Conference number: 5th |
Publication series
Name | Communications in Computer and Information Science |
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Publisher | Springer |
Volume | 357 |
ISSN (Print) | 1865-0929 |
Conference
Conference | International Joint Conference on Biomedical Engineering Systems and Technologies (BIOSTEC) 2012 |
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Abbreviated title | BIOSTEC 2012 |
Country/Territory | Portugal |
City | Vilamoura, Algarve |
Period | 1/02/12 → 4/02/12 |
Keywords
- Bionic vision
- Phosphene
- Portable simulator
- Visual cortex
- Visual prosthesis
- Visuotopic mapping