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μ-Foil Polymer Electrode Array for Intracortical Neural Recordings

Ejserholm, Fredrik LU ; Köhler, Per LU ; Granmo, Marcus LU ; Schouenborg, Jens LU ; Bengtsson, Martin LU and Wallman, Lars LU (2014) In Translational Engineering in Health and Medicine, IEEE Journal of 2.
Abstract
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... (More)
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. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Biomedical electrodes, brain–computer interfaces, implantable biomedical devices, microelectrodes, neural engineering, polymers.
in
Translational Engineering in Health and Medicine, IEEE Journal of
volume
2
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • Other:DOI: 10.1109/JTEHM.2014.2326859
  • Scopus:84925399776
DOI
10.1109/JTEHM.2014.2326859
language
English
LU publication?
yes
id
dffcf4f3-3d5d-44ad-83dd-08669729427a (old id 8566645)
date added to LUP
2016-01-29 11:50:26
date last changed
2016-11-27 04:31:53
@misc{dffcf4f3-3d5d-44ad-83dd-08669729427a,
  abstract     = {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.},
  author       = {Ejserholm, Fredrik and Köhler, Per and Granmo, Marcus and Schouenborg, Jens and Bengtsson, Martin and Wallman, Lars},
  keyword      = {Biomedical electrodes,brain–computer interfaces,implantable biomedical devices,microelectrodes,neural engineering,polymers.},
  language     = {eng},
  publisher    = {ARRAY(0xd82c048)},
  series       = {Translational Engineering in Health and Medicine, IEEE Journal of},
  title        = {μ-Foil Polymer Electrode Array for Intracortical Neural Recordings},
  url          = {http://dx.doi.org/10.1109/JTEHM.2014.2326859},
  volume       = {2},
  year         = {2014},
}