Carbon-nanotube-modified electrodes for highly efficient acute neural recording

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Title
Carbon-nanotube-modified electrodes for highly efficient acute neural recording
Author(s)
Jung Hwal Shin; Kim G.B.; Lee E.J.; An T.C; Shin K.J; Seung Eun Lee; Choi W.S; Sukchan Lee; Charles Latchoumane; Hee Sup Shin; Lim G.
Publication Date
2014-02
Journal
ADVANCED HEALTHCARE MATERIALS, v.3, no.2, pp.245 - 252
Publisher
Wiley-VCH
Abstract
Microelectrodes are widely used for monitoring neural activities in various neurobiological studies. The size of the neural electrode is an important factor in determining the signal-to-noise ratio (SNR) of recorded neural signals and, thereby, the recording sensitivity. Here, it is demonstrated that commercial tungsten microelectrodes can be modified with carbon nanotubes (CNTs), resulting in a highly sensitive recording ability. The impedance with the respect to surface area of the CNT-modified electrodes (CNEs) is much less than that of tungsten microelectrodes because of their large electrochemical surface area (ESA). In addition, the noise level of neural signals recorded by CNEs is significantly less. Thus, the SNR is greater than that obtained using tungsten microelectrodes. Importantly, when applied in a mouse brain in vivo, the CNEs can detect action potentials five times more efficiently than tungsten microelectrodes. This technique provides a significant advance in the recording of neural signals, especially in brain regions with sparse neuronal densities. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
URI
https://pr.ibs.re.kr/handle/8788114/1530
ISSN
2192-2640
Appears in Collections:
Center for Cognition and Sociality(인지 및 사회성 연구단) > Journal Papers (저널논문)
Files in This Item:
166_Adv Healthc Mater_Carbon-Nanotube.pdfDownload

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