A low-cost, 61-channel μeCoG array for use in rodents

Virginia Woods, Charles Wang, Silvia Bossi, Michele Insanally, Michael Trumpis, Robert Froemke, Jonathan Viventi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Scopus citations


Micro-Electrocorticography (μECoG) offers a minimally invasive, high resolution interface with large areas of cortex. A wide variety of μECoG designs have been developed and customized [1]-[4], including active, multiplexed arrays [5] and arrays on dissolving substrates for increased conformal contact [6]. However, designing and fabricating customized μECoG arrays requires access to microfabrication facilities, which many neuroscience labs do not have. Microfabrication is also typically labor intensive and expensive. Commercial μECoG arrays with 64 electrodes and coarser dimensions cost approximately $1000, limiting their suitability for chronic implantation in large numbers of animals. Here we present a high density (406 μm spacing), flexible (∼30 μm thin), 61-contact μECoG electrode array fabricated using a low-cost, commercial manufacturing process. The array costs just $26 when ordered in quantities of 100, with the cost per electrode increasing slightly when lower quantities are ordered. Fine pitch wires minimize the size of the interconnections, enabling chronic implantation in rodents. In-house post-processing of the fabricated μECoG arrays added optional electrode coatings, such as platinum black, to reduce the electrode impedance. Our electrode design and manufacturing process dramatically improves the accessibility and reduces the cost of high-volume, high-resolution neuroscience.

Original languageEnglish (US)
Title of host publication2015 7th International IEEE/EMBS Conference on Neural Engineering, NER 2015
PublisherIEEE Computer Society
Number of pages4
ISBN (Electronic)9781467363891
StatePublished - Jul 1 2015
Externally publishedYes
Event7th International IEEE/EMBS Conference on Neural Engineering, NER 2015 - Montpellier, France
Duration: Apr 22 2015Apr 24 2015

Publication series

NameInternational IEEE/EMBS Conference on Neural Engineering, NER
ISSN (Print)1948-3546
ISSN (Electronic)1948-3554


Other7th International IEEE/EMBS Conference on Neural Engineering, NER 2015

Bibliographical note

Publisher Copyright:
© 2015 IEEE.


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