TITLE

On the feasibility of neurocurrent imaging by low-field nuclear magnetic resonance

AUTHOR(S)
Burghoff, Martin; Albrecht, Hans-Helge; Hartwig, Stefan; Hilschenz, Ingo; Körber, Rainer; Höfner, Nora; Scheer, Hans-Jürgen; Voigt, Jens; Trahms, Lutz; Curio, Gabriel
PUB. DATE
June 2010
SOURCE
Applied Physics Letters;6/7/2010, Vol. 96 Issue 23, p233701
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We describe a nuclear magnetic resonance (NMR) spectrometer operating at 20 μT with a frequency resolution of 2 mHz to determine the intrinsic linewidth of the proton resonance in the human brain to be about 3 Hz. Using the same system we measured a biomagnetic field of 0.5 to 1 pT amplitude, which was generated by sustained brain activity evoked during repetitive median nerve stimulation. From these data, the effect of neuronal currents on the proton NMR signal was estimated. We conclude that neuronal currents may cause a measurable shift of the proton NMR line of brain tissue in low-fields.
ACCESSION #
51378940

 

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