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If you re-run Stats & Post-stats rather than everything including pre- stats, you should get the same stats and post-stats results. They may look slightly different purely because the underlying example func image has now been smoothed so looks more smooth. On 1 Feb 2008, at 18:08, Carlos Faraco wrote: > So, if I run the stats & post-stats again, is it as if I am running > actual > statistics on data that has already had statistics run on it (this > would > explain the lack of supra-threshold voxels)?. The reason I ran stats > & > post-stats vs. just post-stats is because I had specified my EVs > incorrectly, and thought I could just skip the pre-stats part. > However, I > guess this is incorrect, as I just compared the rendered-zstat for > EV - > Baseline for a re-run of stats & post-stats to an analysis done from > the > beginning and noticed the results were quite different. > --------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------