How to read the values of the file pFDR_corr_Subject1_Condition001_Source001.nii? I want to read the fdr corrected p values and sort by giving a threshold value. Importing it to matlab workspace shows 512 X 512 X 112 matrix which cannot be loaded. What is the way to put a threshold on this p values and take out only those p values which is above a certain threshold and plot them on an anatomical image?