Differences to the original SPM5 segmentation

Function Subfunction Additional options of VBM5.1
Estimation Normalization Optional use of center-of-mass for predefining the origin
Writing Clean up Slightly modified algorithm
Modulation Optional modulation for non-linear effects only
MRF Optional application of Markov Random Fields
Segmentation Optional segmentation without tissue priors
Statistics Cluster statistics Optional non-stationary cluster extent correction