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Hi - yes you have to create that from the tstat, e.g. fslmaths <tstat> -mul 0 -add 1 grot ttoz grot <tstat> <dof> where you need to get the <dof> (degrees of freedom) from your model. Cheers. On 20 Oct 2009, at 13:36, Jiansong Xu wrote: > Thanks, Steve. >> >>> Are the next three columns in the output the x y z coordinates of >>> the peak voxel in each cluster? How can I get z stats of peak voxel? >> >> By putting in a zstat image for the "cope" option instead of the >> tstat. >> > > But, I see only tstat image, no zstat image of outputs of "randomise". > > Best > > Jiansong > --------------------------------------------------------------------------- Stephen M. Smith, Professor of Biomedical Engineering Associate Director, Oxford University FMRIB Centre FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK +44 (0) 1865 222726 (fax 222717) [log in to unmask] http://www.fmrib.ox.ac.uk/~steve ---------------------------------------------------------------------------