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μ-Foil Polymer Electrode Array for Intracortical Neural Recordings
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- Ejserholm, Fredrik (author)
- Lund University,Lunds universitet,Avdelningen för Biomedicinsk teknik,Institutionen för biomedicinsk teknik,Institutioner vid LTH,Lunds Tekniska Högskola,Neuronano Research Center (NRC),Forskargrupper vid Lunds universitet,Department of Biomedical Engineering,Departments at LTH,Faculty of Engineering, LTH,Lund University Research Groups
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- Köhler, Per (author)
- Lund University,Lunds universitet,Neuronano Research Center (NRC),Forskargrupper vid Lunds universitet,Lund University Research Groups
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- Granmo, Marcus (author)
- Lund University,Lunds universitet,Neurofysiologi,Forskargrupper vid Lunds universitet,Neuronano Research Center (NRC),Neurophysiology,Lund University Research Groups
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- 2014
- 2014
- English.
- In: IEEE Journal of Translational Engineering in Health and Medicine. ; 2
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- We have developed a multichannel electrode array—termed μ-foil—that comprises ultrathin and flexible electrodes protruding from a thin foil at fixed distances. In addition to allowing some of the active sites to reach less compromised tissue, the barb-like protrusions that also serves the purpose of anchoring the electrode array into the tissue. This paper is an early evaluation of technical aspects and performance of this electrode array in acute in vitro/in vivo experiments. The interface impedance was reduced by up to two decades by electroplating the active sites with platinum black. The platinum black also allowed for a reduced phase lag for higher frequency components. The distance between the protrusions of the electrode array was tailored to match the architecture of the rat cerebral cortex. In vivo acute measurements confirmed a high signal-to-noise ratio for the neural recordings, and no significant crosstalk between recording channels.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Medicinteknik -- Medicinsk material- och protesteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Medical Engineering -- Medical Materials (hsv//eng)
- NATURVETENSKAP -- Biologi -- Annan biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Other Biological Topics (hsv//eng)
Keyword
- Biomedical electrodes
- brain–computer interfaces
- implantable biomedical devices
- microelectrodes
- neural engineering
- polymers.
Publication and Content Type
- art (subject category)
- ref (subject category)
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