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Hi - the "regression coefficients" are the main images (the NOT _Z ones) output by stage2 - see the dualreg/randomise pages on the new FSL wiki. Cheers. On 12 Oct 2012, at 02:17, Saeed R. wrote: > Hello all, > > On page 2 of the paper 'Distinct patterns of brain activity in young carriers of the APOE-4 allele' (Filippini et all 2009), in the resting state results section, they claim "head of the hippocampus and amygdala; degree of coactivation increased by a factor of 5.3 (left) and 3.7 (right)". They used "the regression coefficient as part of the ‘‘dual-regression’’ approach" to obtain these values. > > Does anyone know how to obtain these values? I've used dual regression on a data set, and obtained statistically significant voxels. It would be nice to know 'how much more active' these voxels are. > > Thanks. > > Ahmad Saeed Rajab, BMath. > Candidate for Master of Science, Medical Biophysics > University of Toronto, Toronto, Ontario > > Sunnybrook Health Sciences Centre > 2075 Bayview Avenue > Toronto, ON, M4N 3M5 > --------------------------------------------------------------------------- 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 ---------------------------------------------------------------------------