Hi Doug,
just to clarify:
If I want to contrast taskreg 1 vs. mean(taskreg 2,3,4,5,6), I would compute
ces= ces(taskreg 1) - mean(ces(taskreg 2,3,4,5,6))
and
cesvar=mean(cesvar(taskreg(1,2,3,4,5,6)))

Is that correct?
Thanks, Caspar


2014-11-11 13:19 GMT-05:00 Bill Taylor <b...@cs.wisc.edu>:

> Sorry, Though we do have freesurfer pipelines we run in Madison, I
> responded to wrong email.
>
> Bill Taylor
> Center for High Throughput Computing
> Computer Sciences
> University of Wisconsin, Madison
>
> On 11/11/2014 12:09 PM, Bill Taylor wrote:
> > I'll start the process thursday.
> > On 11/11/2014 12:04 PM, Douglas N Greve wrote:
> >> It will be the same as the DOF of the individual contrasts (don't sum
> them).
> >>
> >> On 11/11/2014 12:58 PM, Caspar M. Schwiedrzik wrote:
> >>> ok, I will try that. How do I get the degrees of freedom? Thanks!
> Caspar
> >>>
> >>> 2014-11-11 12:04 GMT-05:00 Douglas N Greve <gr...@nmr.mgh.harvard.edu
> >>> <mailto:gr...@nmr.mgh.harvard.edu>>:
> >>>
> >>>
> >>>       Actually, you can still do each contrast individually. Each will
> >>>       produce
> >>>       ces and cesvar files. Take the difference between the ces files
> >>>       and the
> >>>       average of the cesvar files, then feed the result into
> mri_glmfit FFX
> >>>
> >>>       doug
> >>>
> >>>
> >>>       On 11/11/2014 11:56 AM, Caspar M. Schwiedrzik wrote:
> >>>       > Hi Doug,
> >>>       > I wanted to follow up on this. Would you be able to provide a
> >>>       > workaround for contrasting multiple taskregs against each
> other? Is
> >>>       > there something I can try in the meantime? Thanks, Caspar
> >>>       >
> >>>       >
> >>>       > 2014-11-10 13:54 GMT-05:00 Caspar M. Schwiedrzik
> >>>       > <cschwie...@rockefeller.edu <mailto:cschwie...@rockefeller.edu
> >
> >>>       <mailto:cschwie...@rockefeller.edu
> >>>       <mailto:cschwie...@rockefeller.edu>>>:
> >>>       >
> >>>       >     Hi Doug,
> >>>       >     thanks for your reply. I would like to feed the differences
> >>>       into a
> >>>       >     FFX group analysis, so I think I will need to resort to
> your
> >>>       >     workaround. It would be great if you could provide that.
> Thanks!
> >>>       >     Caspar
> >>>       >
> >>>       >     2014-11-10 13:45 GMT-05:00 Douglas N Greve
> >>>       >     <gr...@nmr.mgh.harvard.edu
> >>>       <mailto:gr...@nmr.mgh.harvard.edu>
> >>>       <mailto:gr...@nmr.mgh.harvard.edu
> >>>       <mailto:gr...@nmr.mgh.harvard.edu>>>:
> >>>       >
> >>>       >
> >>>       >         To get sig maps for  an individual, this is problematic
> >>>       but I
> >>>       >         could
> >>>       >         probably come up with a work-around. For a group
> >>>       analysis, you can
> >>>       >         simply compute each taskreg separately, then subtract
> >>>       the two
> >>>       >         prior to
> >>>       >         running mri_glmfit.
> >>>       >         doug
> >>>       >
> >>>       >         On 11/10/2014 01:36 PM, Caspar M. Schwiedrzik wrote:
> >>>       >         > Hi!
> >>>       >         > A quick follow-up:
> >>>       >         > I have a taskreg file with 6 continuous predictors. I
> >>>       would
> >>>       >         like to
> >>>       >         > run specific contrasts, e.g., predictor 1 vs.
> >>>       mean(predictor
> >>>       >         2:6).
> >>>       >         > From what I gather, selxavg3-sess will run automatic
> >>>       >         contrasts on
> >>>       >         > taskregs, but the automatic contrasts are against
> >>>       baseline.
> >>>       >         This is
> >>>       >         > not what I need at this point.
> >>>       >         > mk-contrast-sess does not like what I am putting in
> >>>       because
> >>>       >         I do not
> >>>       >         > have a paradigm file in which condition numbers are
> >>>       specified.
> >>>       >         > Is there a way to compute specific contrasts between
> >>>       multiple
> >>>       >         > taskregs, and if not, is there a workaround?
> >>>       >         > Thank you very much, Caspar
> >>>       >         >
> >>>       >         >
> >>>       >         > 2014-11-06 15:23 GMT-05:00 Caspar M. Schwiedrzik
> >>>       >         > <cschwie...@rockefeller.edu
> >>>       <mailto:cschwie...@rockefeller.edu>
> >>>       >         <mailto:cschwie...@rockefeller.edu
> >>>       <mailto:cschwie...@rockefeller.edu>>
> >>>       >         <mailto:cschwie...@rockefeller.edu
> >>>       <mailto:cschwie...@rockefeller.edu>
> >>>       >         <mailto:cschwie...@rockefeller.edu <mailto:
> cschwie...@rockefeller.edu>>>>:
> >>>       >         >
> >>>       >         >     Hi!
> >>>       >         >     I have several external regressors in my analysis
> >>>       that I
> >>>       >         configure
> >>>       >         >     with -taskreg in mkanalysis-sess (something like
> >>>       -notask
> >>>       >         -taskreg
> >>>       >         >     nameoffile 6).
> >>>       >         >     I was wondering how to set up mkcontrast-sess to
> >>>       >         contrast these
> >>>       >         >     regerssors given that I do not have a paradigm
> >>>       file for
> >>>       >         them.
> >>>       >         >     Can I just do something like -a 1 -c 2 -c 3 -c 4
> -c 5?
> >>>       >         >
> >>>       >         >     Thanks, Caspar
> >>>       >         >
> >>>       >         >
> >>>       >         >
> >>>       >         >
> >>>       >         > _______________________________________________
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> >>>       >         >
> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
> >>>       >
> >>>       >         --
> >>>       >         Douglas N. Greve, Ph.D.
> >>>       >         MGH-NMR Center
> >>>       > gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu>
> >>>       <mailto:gr...@nmr.mgh.harvard.edu <mailto:
> gr...@nmr.mgh.harvard.edu>>
> >>>       >         Phone Number: 617-724-2358 <tel:617-724-2358>
> >>>       <tel:617-724-2358 <tel:617-724-2358>>
> >>>       >         Fax: 617-726-7422 <tel:617-726-7422> <tel:617-726-7422
> >>>       <tel:617-726-7422>>
> >>>       >
> >>>       >         Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
> >>>       <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting>
> >>>       >         <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
> >
> >>>       >         FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2
> >>>       > www.nmr.mgh.harvard.edu/facility/filedrop/index.html
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> >>>       >
> >>>        <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html>
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> >>>       >
> >>>       >  _______________________________________________
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> >>>       >
> >>>       >         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
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> >>>       >         Compliance HelpLine at
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> >>>       --
> >>>       Douglas N. Greve, Ph.D.
> >>>       MGH-NMR Center
> >>>       gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu>
> >>>       Phone Number: 617-724-2358 <tel:617-724-2358>
> >>>       Fax: 617-726-7422 <tel:617-726-7422>
> >>>
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> >>>       www.nmr.mgh.harvard.edu/facility/filedrop/index.html
> >>>       <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html>
> >>>       Outgoing:
> >>>       ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/
> >>>
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> >>>
> >>>
> >>>
> >>>
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