Long-term cortical recordings with microactuated microelectrodes

Nathan Jackson, Paula Stice, Murat Okandan, Jit Muthuswamy

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

5 Scopus citations


Current microelectrode array technologies often fail over a period of time presumably due to brain tissue reaction and micromotion around the implant site. We report here long-term cortical recordings from our novel microactuated microelectrode array technology. Our technology uses electro-thermal microactuators to move each of the three highly doped thin (∼4μm thick) polysilicon microelectrodes in the array. Multi-unit activity in n=2 rodents was monitored for a period of over 12 weeks. High-quality multi-unit data with noise levels less than 10 μV peak-to-peak and signal levels ranging from 100 μV to S mV (peak-to-peak) were obtained over the entire duration of study. The results of this study demonstrate the long-term recording capability of the microactuated microelectrodes in rodent models.

Original languageEnglish (US)
Title of host publicationProceedings of the 3rd International IEEE EMBS Conference on Neural Engineering
Number of pages3
StatePublished - Sep 25 2007
Externally publishedYes
Event3rd International IEEE EMBS Conference on Neural Engineering - Kohala Coast, HI, United States
Duration: May 2 2007May 5 2007

Publication series

NameProceedings of the 3rd International IEEE EMBS Conference on Neural Engineering


Other3rd International IEEE EMBS Conference on Neural Engineering
Country/TerritoryUnited States
CityKohala Coast, HI


  • Brain implants
  • MEMS
  • Movable microprobes
  • Neural prosthesis
  • Polysilicon

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Neuroscience (miscellaneous)


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