Programmable active pixel sensor to investigate neural interactions within the retina

Matthew D. Hart; Mark L. Prydderch; James D. Morrison; Derek Murdoch; Keith Mathieson

doi:10.1117/12.821624

20 May 2009 Programmable active pixel sensor to investigate neural interactions within the retina

Matthew D. Hart, Mark L. Prydderch, James D. Morrison, Derek Murdoch, Keith Mathieson

Proceedings Volume 7365, Bioengineered and Bioinspired Systems IV; 736504 (2009) https://doi.org/10.1117/12.821624
Event: SPIE Europe Microtechnologies for the New Millennium, 2009, Dresden, Germany

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.

Citation Download Citation

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); https://doi.org/10.1117/12.821624

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