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Hi - please see the documentation for dual regression and randomise - the corrp file is actually 1-p for convenience of display - so you should set the min displayed intensity to 0.95. On 9 Nov 2012, at 23:51, Jacobs H (NP) wrote: > Dear FSL developers, > > Just a bit of background, so that hopefully this helps a bit to solve my problem: > - I have two groups with pre and post measurements > - I have subtracted : pre-post (so pre > post) > - than I ran the dual regression independent t-test on this difference with education as covariate and voxel-wise grey matter correction > > Looking at the output of the components (corp_tstat files) in fslview, I have the following problem: > - the corp_tstat file covers the whole field of view with one color > - when I change the threshold above (min: 0.01 and max 0.05) I can see the results, but these are not thresholded as the values of the voxels runs above 0.05 > > So, my questions are: > - how can I visualize only the voxels that remained after the corrections (so < 0.05) > - do I need to do this analysis all over again for investigation the opposite (post > pre) > > Thank you very much!! > Best > Heidi > > > ================================================ > Dr. Heidi Jacobs > Postdoc researcher > Faculty of Health, Medicine and Life Sciences > School for Mental Health and Neurosciences > Division Cognitive Neuropsychiatry and Clinical Neurosciences > Alzheimer Center Limburg > [log in to unmask] > www.maastrichtuniversity.nl > www.heidijacobs.nl > > Dr. Tanslaan 12, 6229 ET Maastricht > P.O. Box 616, 6200 MD Maastricht, The Netherlands > T +31 43 38 84 090 F +31 43 38 84 092 > ================================================ --------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------