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Dear Davide, For extraction of time course you can use the source extraction functionality. The most convenient way to access it is via Batch (SPM->M/EEG->M/EEG source reconstruction->M/EEG source extraction). This will generate an SPM dataset with source waveforms. If you want to look at pre-defined times you can just average over those times and get a single number per source that you can then put e.g. in SPSS. If you want to test all the times you'll need to generate 1D images. See http://www.jiscmail.ac.uk/cgi-bin/wa.exe?A2=SPM;ddfaaa9a.1202 See also http://www.jiscmail.ac.uk/cgi-bin/wa.exe?A2=SPM;4b73e5d1.1201 for some relevant discussion of source extraction (the bug mentioned there should be fixed in the latest SPM update). Best, Vladimir On Thu, May 31, 2012 at 3:37 PM, Rivolta, Davide <[log in to unmask]> wrote: > > > Dear all, > > > > I have performed an experiment with 2 groups and 2 conditions. > > I run the statistics at source level and now I wish to look (extract) the > timecourse at the source level. > > I will then run another statistic considering the timecourse. > > I have to do it for 3 components of interest: M100, M170, M250. > > > > I cannot find a tutorial/guide on it. > > > > May you give me some help/guidelines? > > > > Thanks, > > Davide