Reply-To: | | [log in to unmask][log in to unmask]] > Sent: 09 September 2015 16:36 > To: Barnes, Gareth <[log in to unmask]> > Subject: Re: problems with MSP iterative 'Classic' > > Thanks for the kind reply. > > I thought the opposite: 'classic' more data-driven (not rescaling), whereas 'current' it corrects itself by the trials or conditions present. But remember I have only one epoch. > > 'current' seems to work producing meaningful time-series. It also produce nice .nii images. But the iteration seems to be ineffective. > There is a Warning message saying more or less that the number of iterations will not be considered for such option. > > I've also forgot to mention that 'classic' works perfectly when generating a .nii image (1 .nii image each 5 secs). Instead when I'm trying to extract the source by "Source extraction" module, it fails. > Instead with 'current', the "Source extraction" module works perfectly. > > Further, I'm using matlabbatch. Therefore trying to extract sources manually from D.inv{1}}.inverse.M is not that easy. I'd rather prefer to use the already implemented "Source extraction" module ... :-) > > Lastly, what does it mean 'Merge source estimates for multiple inversions'? No exhaustive info are found in SPM batch. > > Thanks for your help, > PR > > On 09.09.2015 16:16, Barnes, Gareth wrote: >> HI Paolo >> The main difference between the 'current' and 'classic' implementations is that 'current' is more general. So if that works I would stick with it. >> You can extract time series by using the M matrix in >> D.inv{1}}.inverse.M M links the data Y to the sources J. You can apply >> M to any epoch of Y. >> Does that help or am I missing the point ? >> Best >> Gareth >> >> >> >> -----Original Message----- >> From: Paolo Ranzi [mailto:[log in to unmask]] >> Sent: 09 September 2015 15:06 >> To: Barnes, Gareth <[log in to unmask]> >> Subject: problems with MSP iterative 'Classic' >> >> Dear Gareth Barnes, >> I'm trying to use MSP + 'Source inversion, iterative'. Regarding the 'Inversion function' the option 'Current' is able to produce 13 time-series of 13 EEG sources. Unfortunately the option 'Classic' fails to extract the sources' time-series. Even setting 'iterations' to '1' it fails. >> I didn't want to use 'Current' since I've single-subject 5 secs epochs. >> Each epoch is source reconstructed separately and then they get merged by custom-made EEGlab script. >> Not sure if the 'Merge source estimates for multiple inversions' should also be used in combination with 'Classic' and before extracting the time-series. >> >> I've checked the manual and internet for template pipeline (e.g. present in DAiSS), but I couldn't find any. I'm not using priors ('Priors image' >> left empty). I'm using SPM12 v. 6475. >> >> Bests, >> Paolo Ranzi >>[log in to unmask] |