Non-metal electrodes for local field potential recordings in magnetic resonance scanners
Jennifer Michelle Taylor 1,2 , Shan Hu 3 , Rajesh Rajamani 4 , Xiao-Hong Zhu 2 , Yi Zhang 2 , and Wei Chen 1,2
Biomedical Engineering, University of
Minnesota, Minneapolis, MN, United States,
University of Minnesota, Minneapolis, MN, United States,
Engineering, Iowa State University, Ames, IA, United
Engineering, University of Minnesota, Minneapolis, MN,
The use of simultaneous neuronal recording and MRI is
limited by artifacts induced both in the imaging and in
the neuronal traces, but would provide a huge benefit to
the exploration of brain mechanisms and understanding of
the neurophysiology basis of fMRI. Here we have
developed new electrodes using conductive, non-metal
materials that produce no susceptibility artifacts in
anatomical or functional imaging. Additionally, we show
that the gradient induced artifacts in the neuronal
trace are removable, revealing clean neuronal activity.
These breakthroughs will allow for future experiments
and studies exploring the neurovascular relationship
between fMRI and neuronal activity.
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