NDLI: Soft magnetic material based localized magnetic stimulation to cultured neuronal cells and modulation of network activities

Content Provider	IEEE Xplore Digital Library
Author	Saito, Atsushi Saito, Aki Goto, Miho Shimba, Kenta Moriguchi, Hiroyuki Kotani, Kiyoshi Jimbo, Yasuhiko
Copyright Year	2011
Description	Author affiliation: Department of Human and Engineered Environmental Studies, Graduate School of Frontier Sciences, University of Tokyo, Chiba, Japan (Saito, Atsushi; Saito, Aki; Goto, Miho; Shimba, Kenta; Moriguchi, Hiroyuki; Kotani, Kiyoshi; Jimbo, Yasuhiko)
Abstract	Magnetic stimulation is able to modulate the neuronal network activity using the non-invasive magnetically induced current. However, it is unknown how stimulation modulates the neuronal network activity. Therefore, we considered that precise stimulation and evaluation of the modulation of network activities in the vicinity of stimulated sites is required. Here, to establish precisely magnetic stimulation, we developed a Mu-metal that has high magnetic permeability soft magnetic material based localized magnetic stimulation (LMS) system with micro-fabricated dual cell-culture chambers. And, combining this device with a microelectrode array (MEA) permitted the evaluation of the stimulus effects at the stimulated and non-stimulated sites. Here, the dual cell-culture chambers were arranged in a concentric circle manner. Between the inner and outer chambers, 4, 8 and 12 connecting microfluid channels were fabricated using polydimethylsiloxane (PDMS). Rat cortical neurons were separately cultured in outer and inner chambers. Through the micro-conduits, functional synaptic connections were formed. Mu-metal was aligned along the outer circle, which allowed us of focal magnetic stimulation to the cells in the outer chamber. Applying low frequency magnetic field to the Mu-metal, induced currents were generated and the electrical activity of the cells in the outer chamber was modified depending on the stimulation intensity. Following the modified activity in the outer circles, the cells in the inner chamber also showed slightly depressed activity patterns. These results suggested that our system would be promising for highly regulated neural stimulation.
Starting Page	51
Ending Page	54
File Size	1087538
Page Count	4
File Format	PDF
ISBN	9781424441211
ISSN	1557170X
e-ISBN	9781457715891
e-ISBN	9781424441228
DOI	10.1109/IEMBS.2011.6089894
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-08-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic stimulation Biological neural networks Least squares approximation Cells (biology) Magnetic fields Electrodes Soft magnetic materials
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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