Microprobe Array with Low Impedance Electrodes and Highly Flexible Polyimide Cables for Acute Neural Recording

This paper reports on a novel type of silicon- based microprobes with linear, two and three dimensional (3D) distribution of their recording sites. The microprobes comprise either single shafts, combs with multiple shafts or 3D arrays combining two combs with 9, 36 or 72 recording sites, respectivel...

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Bibliographic Details
Main Authors: Kisban, S., Herwik, S., Seidl, K., Rubehn, B., Paul, O., Ruther, P., Stieglitz, T., Jezzini, A.
Format: Conference Proceeding
Language:English
Subjects:
Cables
Connectors
Electrodes
Impedance
Platinum
Polyimides
Probes
Shafts
Silicon
Wire
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Summary:This paper reports on a novel type of silicon- based microprobes with linear, two and three dimensional (3D) distribution of their recording sites. The microprobes comprise either single shafts, combs with multiple shafts or 3D arrays combining two combs with 9, 36 or 72 recording sites, respectively. The electrical interconnection of the probes is achieved through highly flexible polyimide ribbon cables attached using the MicroFlex Technology which allows a connection part of small lateral dimensions. For an improved handling, probes can be secured by a protecting canula. Low-impedance electrodes are achieved by the deposition of platinum black. First in vivo experiments proved the capability to record single action potentials in the motor cortex from electrodes close to the tip as well as body electrodes along the shaft.
ISSN:1094-687X
1558-4615
DOI:10.1109/IEMBS.2007.4352251