I don't know about SPM, I would imagine you could do it somehow. FSL has an implementation. The deconvolution method is usually called "FIR" (finite impulse response)
On 11/16/2017 10:36 AM, fmri2013 wrote: > Dear Douglas > > I will apprecite it if you can please clarify this simple question. > If I optimise my design using Optseq, do you know if this de > convolution process is implemented in SPM or any other software? and > it is part of the processing behind the scenes? Or do I have to > account for this using a specific software. > > Many tha is > > Aser > > > Sent from my Samsung Galaxy smartphone. > > -------- Original message -------- > From: fmri2013 <fmri2...@gmail.com> > Date: 10/11/2017 19:30 (GMT+00:00) > To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu> > Subject: Re: [Freesurfer] Optseq and de convolution for rapid designs > > Many thanks Douglas > > If I optimise my design using Optseq, do you know if this de > convolution process is implemented in SPM or any other software? and > it is part of the processing behind th3 scenes? Or do I have to > account for this using a specific software. > > Aser > > > > Sent from my Samsung Galaxy smartphone. > > -------- Original message -------- > From: Douglas Greve <gr...@nmr.mgh.harvard.edu> > Date: 10/11/2017 19:24 (GMT+00:00) > To: freesurfer@nmr.mgh.harvard.edu > Subject: Re: [Freesurfer] Optseq and de convolution for rapid designs > > It is because the random jitter creates differential amounts of > overlap. Imagine if you have A=C+D and B=C-D. You know A and B, but > you want C and D. You have two equations and two unknowns, so you can > solve for C and D from A and B eventhough C and D "overlap" in A and B > and you never see C or D by themselves. This is a type of deconvolution > > > On 11/10/17 11:38 AM, Aser A wrote: >> Hi all >> >> I used Optseq to optimize rapid event designs with multiple >> conditions . I have a theortical question : how it is possible to >> distingwoh the close by trials ? Is it by de convoution ? How is it >> possible to deal with overallped trials ? >> >> Is it because the conditions are random so that when averaging them >> the distingwoh is possible? >> >> Many thanks >> >> Aser >> >> >> >> _______________________________________________ >> Freesurfer mailing list >> Freesurfer@nmr.mgh.harvard.edu >> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer -- Douglas N. Greve, Ph.D. MGH-NMR Center gr...@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2 www.nmr.mgh.harvard.edu/facility/filedrop/index.html Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
