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Dear Uma, Theoretically yes, but I don’t think anyone has done this yet. Let us know if you encounter any problems :-) Best, P From: UMA K [mailto:[log in to unmask]] Sent: 13 January 2016 11:07 To: Zeidman, Peter <[log in to unmask]> Cc: [log in to unmask] Subject: RE: [SPM] Spectral DCM Thank you Dr. Zeidman Can we do the search and post hoc selection of reduced models using GUI after estimating cross spectra of a full model? Thanks in advance Uma On 13 Jan 2016 16:03, "Zeidman, Peter" <[log in to unmask]<mailto:[log in to unmask]>> wrote: ‘P’ is a cell array of DCMs – one per subject. Leave this blank to select these with the GUI. ‘fun’ is optional. It is a handle to a function which returns an integer, representing which family a candidate model should be assigned to, given its A,B and C matrix. See the help at the top of spm_dcm_post_hoc for more details. Best, P From: SPM (Statistical Parametric Mapping) [mailto:[log in to unmask]<mailto:[log in to unmask]>] On Behalf Of UMA K Sent: 13 January 2016 09:02 To: [log in to unmask]<mailto:[log in to unmask]> Subject: [SPM] Spectral DCM Dear SPM experts, Dr. Razi How can we do the post-hoc selection of spectral dcm models? what is the input variable 'P' and 'fun' represents? regards, uma