Conference Presentation (After Call)

FZJ-2014-00942

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Embedded Device for Simultaneous Recording and Stimulation for Retina Implant Research

Schlösser, M.ZEA-2* ; Cota, O.FZJ* ; Heil, R.ZEA-2* ; Brusius, J.FZJ* ; Offenhäusser, A.FZJ* ; van Waasen, S.ZEA-2* ; Schiek, M.ZEA-2*

2013

Abstract: Simultaneous stimulation and recording of retinal nerve cells with penetrating three dimensional multi-electrode arrays on a localized area is a demanding challenge in next generation retina implant research. Within the scope of this research we developed a device to stimulate a network of bi-polar cells and record retinal ganglion cells with a slight time gap to overcome long recording dead times and switching artifacts in common stimulation- and recording systems. The device contains a four channel stimulator capable of pushing arbitrary bi-polar charges into the tissue and a 16 channel commercial electrophysiology interface chip. The device is a miniaturized front-end for our former developed embedded wireless communicating sensor node. First tests in in-vitro retina slices from adult rat with our device show reliable recordings of ganglia cell activity below 1ms after the bi-polar cell stimulation.

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Contributing Institute(s):

1. Zentralinstitut für Elektronik (ZEA-2)
2. Bioelektronik (ICS-8)
3. Bioelektronik (PGI-8)
4. JARA-FIT (JARA-FIT)

Research Program(s):

1. 423 - Sensorics and bioinspired systems (POF2-423) (POF2-423)
2. 453 - Physics of the Cell (POF2-453) (POF2-453)

Appears in the scientific report 2013

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