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: Contribution to conferencePaper

6 Citations (Scopus)


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
Publication statusPublished - 1 Jul 2015
Event7th International IEEE/EMBS Conference on Neural Engineering, NER 2015 - Montpellier, France
Duration: 1 Jul 2015 → …


Conference7th International IEEE/EMBS Conference on Neural Engineering, NER 2015
Period1/7/15 → …


All Science Journal Classification (ASJC) codes

  • Artificial Intelligence
  • Mechanical Engineering

Cite this

Woods, V., Wang, C., Bossi, S., Insanally, M., Trumpis, M., Froemke, R., & Viventi, J. (2015). A low-cost, 61-channel μeCoG array for use in rodents. Paper presented at 7th International IEEE/EMBS Conference on Neural Engineering, NER 2015, Montpellier, France. https://doi.org/10.1109/NER.2015.7146687