Spatial specificity of the functional gradient echo and spin echo BOLD signal across cortical depth at 7 T
Daniel Haenelt, Robert Trampel, Denis Chaimow…·Nikolaus Weiskopf
This study compares gradient echo and spin echo BOLD signals in human V1 cortex at 7 T, finding that spin echo improves spatial specificity but both techniques show reduced specificity toward the pial surface.