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Proceedings 2017, 1(4), 511; doi:10.3390/proceedings1040511

Demonstration of Intracortical Chronic Recording and Acute Microstimulation Using Novel Floating Neural Probes

1
Institute for Microsensors, -Actuators and -Systems (IMSAS), University of Bremen, Bremen, Germany
2
Institute for Brain Research, University of Bremen, Bremen, Germany
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
*
Author to whom correspondence should be addressed.
Published: 16 August 2017
(This article belongs to the Proceedings of Eurosensors 2017)
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Abstract

This paper presents long-term stable multichannel recording of neural activity using novel intracortical floating probes implanted chronically in rat cortex. The novel flexible probe design approach allows recording of action potentials for at least 38 days after implantation. Furthermore the capability of the PEDOT: PSS coated microelectrodes for electrical stimulation is characterized in vitro and in an acute in vivo experiment. The in vitro results show a charge injection capacity of 2 mC/cm2 and the in vivo results demonstrate reproducible response of the neural network to charge injection up to 1 mC/cm2. The optical inspection of the explanted neural probe reveals sufficient stability of the PEDOT: PSS microelectrode coating for the acute microstimulation experiment. These preliminary results indicate the capability for long-term stable microstimulation.
Keywords: neural probe; chronic recording; intracortical microstimulation; multichannel floating probes; PEDOT: PSS; polyimide; neural activity; cortex neural probe; chronic recording; intracortical microstimulation; multichannel floating probes; PEDOT: PSS; polyimide; neural activity; cortex
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Schander, A.; Stemmann, H.; Kreiter, A.K.; Lang, W. Demonstration of Intracortical Chronic Recording and Acute Microstimulation Using Novel Floating Neural Probes. Proceedings 2017, 1, 511.

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