Abstract
Although electromagnetic stimulation is widely used in neurological studies and clinical applications, conventional electromagnetic stimulation methods have several limitations. Recent studies have reported that micro magnetic stimulation (µMS), which can directly activate neural tissue and cells via sub-millimeter solenoids, has the possibility to overcome such limitations. However, the development and application of µMS using implantable sub-millimeter solenoids has not yet been reported. Here, we proposed a new implantable µMS system and evaluated its validity. In particular, using flavoprotein fluorescence imaging with a high spatial resolution, we evaluated if the stimuli delivered by our system were large enough to activate the mouse auditory cortex in vivo. The results indicated that our system successfully activated neural tissue, and the activity propagation was observed on the brain surface. Thus, this study is the first step to applying µMS implantable devices in investigating basic neuroscience and clinical application tools.
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Acknowledgments
In this work, T.T. was supported by the Magnetic Health Science Foundation (Japan), the Suzuken Memorial Foundation (Japan), and a Grant-in-Aid for Scientific Research (B) (No. 15H02772) and Exploratory Research (No. 15K12091) (Japan). The authors also wish to thank Dr. Kaori Kuribayashi-Shigetomi for her help on the parylene-C coating.
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Minusa, S., Tateno, T. (2016). Developing an Implantable Micro Magnetic Stimulation System to Induce Neural Activity in Vivo . In: Hirose, A., Ozawa, S., Doya, K., Ikeda, K., Lee, M., Liu, D. (eds) Neural Information Processing. ICONIP 2016. Lecture Notes in Computer Science(), vol 9948. Springer, Cham. https://doi.org/10.1007/978-3-319-46672-9_42
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DOI: https://doi.org/10.1007/978-3-319-46672-9_42
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