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Proceedings Paper

Programmable active pixel sensor to investigate neural interactions within the retina
Author(s): Matthew D. Hart; Mark L. Prydderch; James D. Morrison; Derek Murdoch; Keith Mathieson
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Paper Abstract

Detection of the visual scene by the eye and the resultant neural interactions of the retina-brain system give us our perception of sight. We have developed an Active Pixel Sensor (APS) to be used as a tool for both furthering understanding of these interactions via experimentation with the retina and to make developments towards a realisable retinal prosthesis. The sensor consists of 469 pixels in a hexagonal array. The pixels are interconnected by a programmable neural network to mimic lateral interactions between retinal cells. Outputs from the sensor are in the form of biphasic current pulse trains suitable to stimulate retinal cells via a biocompatible array. The APS will be described with initial characterisation and test results.

Paper Details

Date Published: 20 May 2009
PDF: 10 pages
Proc. SPIE 7365, Bioengineered and Bioinspired Systems IV, 736504 (20 May 2009); doi: 10.1117/12.821624
Show Author Affiliations
Matthew D. Hart, Science and Technology Research Council, Rutherford Appleton Lab. (United Kingdom)
Mark L. Prydderch, Science and Technology Research Council, Rutherford Appleton Lab. (United Kingdom)
James D. Morrison, Univ. of Glasgow (United Kingdom)
Derek Murdoch, Univ. of Glasgow (United Kingdom)
Keith Mathieson, Univ. of Glasgow (United Kingdom)

Published in SPIE Proceedings Vol. 7365:
Bioengineered and Bioinspired Systems IV
Ángel B. Rodríguez-Vázquez, Editor(s)

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