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Tom and/or Karl I have installed these modifications and they now work very well. It seems that it's possible to exert complete control of the conjunction via the three options. However, why is it not possible to specify the spatial extent? I accept that in terms of conjunction analysis that might violate some primary rule but an explanation would be welcome - I'd like to tidy up some of the results by excluding single voxels/small clusters. Also, is there a preprint of the manuscript explaining the intermediate stage, alluded to below? Regards - MFG > -----Original Message----- > From: SPM (Statistical Parametric Mapping) > [mailto:[log in to unmask]] On Behalf Of Thomas E Nichols > Sent: Wednesday, December 22, 2004 11:07 AM > To: [log in to unmask] > Subject: Re: [SPM] WFU Pickatlas, Tom Nichol's conjunction > analysis and Matlab search paths... > > Paul, Andrew, Joseph, and other Conjunction users, > > Karl Friston and I have corresponded on a way to unify his > views on conjunctions with my views. As a result we have > produced a revised set of conjunction modifications, which, > thanks to Karl, are actually simplier and result in fewer > lines of modified code. > > If you download & install just these two files into a > standard SPM2 release > > ftp://ftp.fil.ion.ucl.ac.uk/spm/spm2_updates/spm_getSPM.m > ftp://ftp.fil.ion.ucl.ac.uk/spm/spm2_updates/spm_uc_FDR.m > > you will get new conjunction capabilities and can abandon the > use of my conjunction modifications. > > > With these modifications you can use any of > > Global Null Ho: 0 effects true > Conjunction Null Ho: as many as K-1 effects true > Intermediate Null Ho: as many as 0<k<K-1 effects true. > > which imply different alternatives... > > Global Alt Ha: 1 or more effects true > Conjunction Alt Ha: all effects true > Intermediate Alt Ha: k+1 or more effects true > > Karl has a manuscript explaining the intermediate method > which I'm sure he'd be happy to post if he hasn't done so > already (Karl?). > > -Tom > > > -- Thomas Nichols -------------------- Department of > Biostatistics > http://www.sph.umich.edu/~nichols University of Michigan > [log in to unmask] 1420 Washington Heights > -------------------------------------- Ann Arbor, MI 48109-2029 >