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20 May 2009 Programmable active pixel sensor to investigate neural interactions within the retina
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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.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Matthew D. Hart, Mark L. Prydderch, James D. Morrison, Derek Murdoch, and Keith Mathieson "Programmable active pixel sensor to investigate neural interactions within the retina", Proc. SPIE 7365, Bioengineered and Bioinspired Systems IV, 736504 (20 May 2009);


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