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Hi FSL Folk, I'm looking to script the creation of the GLM to be used in Randomise analyses and I was wondering what information it needed. It looks (in the design.mat file) like: /NumWaves is the number of EVs /NumPoints is the number of subjects /PPheights are the maximums of each EV and then the matrix is listed under /Matrix. Do these numbers need to be in scientific form? Eg do I have to write 5.670000e+2 or can I type 567? In the design.con file: /NumWaves is the number of EVs (same as in the design.mat file) /NumContrasts is the number of contrasts /PPheights ????? <-- I don't know what this number is! Do I need it? /RequiredEffect ???? <-- I don't know how to calculate this number! Do I need it? /Matrix is the contrast matrix. Again, do these numbers need to be in scientific notation? If this task is a pain I can just make the matrix in the GLM gui. I guess I'm just feeling lazy! Thanks for all the help! Kx -- Kirstie Whitaker Doctoral Candidate Cognitive Control and Development Laboratory Helen Wills Neuroscience Institute University of California at Berkeley tel: 510 684 2456 web: bungelab.berkeley.edu blog: http://bungelab.blogspot.com/