A transparent μECoG array for simultaneous recording and optogenetic stimulation

Annu Int Conf IEEE Eng Med Biol Soc. 2011;2011:2937-40. doi: 10.1109/IEMBS.2011.6090808.


In this paper we report for the first time the design, fabrication and characterization of an optically transparent electrode array for micro-electrocorticography. We present a 49-channel μECoG array with an electrode pitch of 800 μm and a 16-channel linear μECoG array with an electrode pitch of 200 μm. The backing material was Parylene C. Transparent, sputtered indium tin oxide (ITO) was used in conjunction with e-beam evaporated gold to fabricate the electrodes. We provide electrochemical impedance characterization and light transmission data for the fabricated devices.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Electrodes
  • Electroencephalography / instrumentation*
  • Electroencephalography / methods