Masking Level Differences – A Diffusion Tensor Imaging and Functional MRI Study
Figure 1
Regions of negative correlation between DTI FA measures and signal detection thresholds are shown for N0S0, N0SL, N0SR, N0Sπ, and NπS0.
These show regions where tracts are more directional (anisotropic) with better thresholds. While there is a bilateral pattern revealed for N0S0, N0SL, and N0SR, there is no activation seen in this region for N0Sπ and NπS0. Each image is a coronal view, with the MNI template Y coordinate = 13 mm; this location was selected based on a finding of activity between N0Sπ and NπS0 in our previous study within the corpus callosum. A lenient threshold of p<.1, was used to show the potential full extent of the involved regions. Images are displayed with patient's left on the left side of the image, an “L” marks the patient's left on the first image.