deletions | additions       diff --git a/1_Assumption_is_made_that__.md b/1_Assumption_is_made_that__.md  index 1b47da3..a2e5add 100644  --- a/1_Assumption_is_made_that__.md  +++ b/1_Assumption_is_made_that__.md 
...
1. *  Assumption is made that the major contribution to the boundary variability are the contrast differences and gradient distortions, but it was shows (see Tardif 2010 "Regional Impact of Field Strength on Voxel-Based Morphometry Results" and Tardif 2009 "Sensitivity of voxel-based morphometry analysis to choice of imaging protocol at 3 T"), that different protocols and field strengths significantly affect signal and contrast inhomogeneity patterns: which leads to differences in regional accuracy of tissue classification due to different contrast to noise ratio.