| Enlarged gold-tipped silicon microprobe arrays and signal compensation for multi-site electroretinogram recordings in the isolated carp retina. | |
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MedLine Citation:
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PMID: 21093247 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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In order to record multi-site electroretinogram (ERG) responses in isolated carp retinae, we utilized three-dimensional (3D), extracellular, 3.5-μm-diameter silicon (Si) probe arrays fabricated by the selective vapor-liquid-solid (VLS) growth method. Neural recordings with the Si microprobe exhibit low signal-to-noise (S/N) ratios of recorded responses due to the high-electrical-impedance characteristics of the small recording area at the probe tip. To increase the S/N ratio, we designed and fabricated enlarged gold (Au) tipped Si microprobes (10-μm-diameter Au tip and 3.5-μm-diameter probe body). In addition, we demonstrated that the signal attenuation and phase delay of ERG responses recorded via the Si probe can be compensated by the inverse filtering method. We conclude that the reduction of probe impedance and the compensation of recorded signals are useful approaches to obtain distortion-free recording of neural signals with high-impedance microelectrodes. |
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Authors:
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Tetsuhiro Harimoto; Kuniharu Takei; Takeshi Kawano; Akito Ishihara; Takahiro Kawashima; Hidekazu Kaneko; Makoto Ishida; Shiro Usui |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-10-16 |
Journal Detail:
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Title: Biosensors & bioelectronics Volume: 26 ISSN: 1873-4235 ISO Abbreviation: Biosens Bioelectron Publication Date: 2011 Jan |
Date Detail:
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Created Date: 2011-01-03 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9001289 Medline TA: Biosens Bioelectron Country: England |
Other Details:
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Languages: eng Pagination: 2368-75 Citation Subset: IM |
Copyright Information:
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Copyright © 2010 Elsevier B.V. All rights reserved. |
Affiliation:
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Department of Electronic and Information Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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