Michael J. Tobia1, David Gallagher1, Rahul Dewal1, Sebastien Rupprecht1, Prasanna Karunanayaka1, and Qing X. Yang1
experiments showed that fluctuating electric current is sufficient to generate
local functional connectivity anisotropy (LFCA), and that effects of motion, such as Lorentz forces, cannot explain the alignment of eigenvectors through neighboring voxels or B0 orientation-dependence. In conclusion, anisotropic correlations of
fMRI time series may arise from an alternative non-BOLD contrast mechanism,
potentially related to an electric current effect on B0.