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  Targeting Projection Fibers for Optogenetics and fMRI

Yu, X., Dodd, S., & Koretsky, A. (2013). Targeting Projection Fibers for Optogenetics and fMRI. In 21st Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2013).

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Item Permalink: https://hdl.handle.net/21.11116/0000-0001-559A-2 Version Permalink: https://hdl.handle.net/21.11116/0000-0004-7327-F
Genre: Meeting Abstract

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https://www.ismrm.org/13/session75.htm (Abstract)
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Yu, X1, Author           
Dodd, S, Author
Koretsky, AP, Author
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 Abstract: Channelrhodopsins (ChRs) were expressed along thalamocortical and cortiocortical pathways in the rat brain. An implanted fiber optic was targeted to axonal fibers that input neural activity into cortical areas. This experimental design allowed us to control projection activity in a fiber-specific manner and to detect reliable fMRI signals at relatively low light intensities in cortex remote from the fiber optic-penetrated brain areas. Light-driven fMRI signal can also be detected due to antidromic activity from back-propagated action potentials. This work demonstrated the usefulness of fMRI to detect brain activation via optogenetics of specific neural fiber pathways.

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 Dates: 2013-04
 Publication Status: Issued
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Title: 21st Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2013)
Place of Event: Salt Lake City, UT, USA
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Title: 21st Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2013)
Source Genre: Proceedings
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Pages: - Volume / Issue: - Sequence Number: 0758 Start / End Page: - Identifier: -