Dear Doug,
Thanks for your reply. As new users, we're having a little trouble
verifying that our processing steps are correct. We're really after two
things. with a third question regarding support materials:
1) Some feedback regarding whether we've completed all the steps necessary
for a glm analysis. Based on our reading and (very limited) experience, it
seems like the combination of the mkanalysis, mkcontrast, selxavg, and
stxgrinder steps are all we need to do this properly, and that using
isxavg will allow us to run a second-level group analysis. Is this
correct? We're concerned that we may have missed something along the way.
2) Insight into how to set cluster extents and conduct statistical tests
on the data. We're used to SPM and are struggling a bit with the
inferential side of FsFast.
3) We have been passed along the Handbook for the MGH-NMR standard
processing stream (which was put out in 2000). Do you know if there is a
more current resource? The tutorial on the Wiki is a little incomplete and
I haven't been able to chase down anything on how to run a glm in FsFast.
Any help will be greatly appreciated.
Thanks!
Avram
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Avram Holmes
Department of Psychology
Harvard University
1210 William James Hall Phone:(617) 495-0790
33 Kirkland Street Fax:(617) 495-3728
Cambridge, MA 02138, USA Email: [EMAIL PROTECTED]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
On Tue, 12 Dec 2006, Doug Greve wrote:
Just looking at your scripts, they look ok. It's hard to figure out what
"trouble viewing/interpreting the results" means.
doug
Avram Holmes wrote:
FSFast support folks,
I am looking for some support running an analysis in FSFast. As far as we
can
tell we have successfully run every step in a random effects analysis but
we
are having trouble viewing/interpreting the results. I was hoping that I
would
be able to post my processing stream and see if anyone would give us
feedback
on what we have or haven?t done correctly (see below). My understanding is
that
after I run mkanalysis-sess.new, selxavg-sess, mkcontrast-sess,
stxgrinder-sess,
and isxavg-re-sess, I have fit a model to the data and I am testing the fit
of
the model across our contrasts. However, I?m not seeing the expected
effects
and I am wondering if I am missing a step or if my stream is not optimized.
I
have spent a considerable amount of time searching the wiki page and I
haven?t
been able to track down a detailed description of how to conduct and
interpret
a complete GLM analysis in FSFast so I am a little unsure if I have
everything
correct.
Any help would be greatly appreciated,
Avram
#! /bin/csh -f
Step1
set mypath = .
set sub = $1
mc-sess -fstem f -fmcstem fmc -s ${sub} -d ${mypath}
stc-sess -i fmc -o fmcstc -so siemens -s ${sub} -d ${mypath}
spatialsmooth-sess -i fmcstc -o fmcstcsm5 -fwhm 5 -d ${mypath} -s ${sub}
mkbrainmask-sess -s ${sub} -d ${mypath}
Step2
set analysis = 'moneygamma_test'
set subj = 'FPPREW01 FPPREW02 FPPREW03 FPPREW04 FPPREW05 FPPREW06 FPPREW07
FPPREW08 FPPREW09 FPPREW10 FPPREW11 FPPREW12 FPPREW13 FPPREW14 FPPREW15
FPPREW16 FPPREW17 FPPREW18'
mkanalysis-sess.new -analysis ${analysis} -gammafit 2.25 1.25 -TR 2.5
-paradigm
moneygame.par -designtype event-related -timewindow 30 -funcstem fmcstcsm5
-nconditions 5 -polyfit 1 -mcextreg -taumax 20 -mask brain
foreach s ($subj)
selxavg-sess -s ${s} -d . -analysis ${analysis}
end
mkcontrast-sess -analysis ${analysis} -contrast omnibus -a 1 -a 2 -a 3 -a 4
-a 5
-c 0 -nosumconds
mkcontrast-sess -analysis ${analysis} -contrast pun_v_noinc -a 1 -c 2
mkcontrast-sess -analysis ${analysis} -contrast rew_v_noinc -a 3 -c 2
mkcontrast-sess -analysis ${analysis} -contrast pun_v_rew -a 1 -c 3
mkcontrast-sess -analysis ${analysis} -contrast rew_v_pun -a 3 -c 1
foreach s ($subj)
autoreg-sess -d . -s ${s} -fsd bold
end
Step3
set mypath = .
set analysis = 'moneygamma_test'
set subj = 'FPPREW01 FPPREW02 FPPREW03 FPPREW04 FPPREW05 FPPREW06 FPPREW07
FPPREW08 FPPREW09 FPPREW10 FPPREW11 FPPREW12 FPPREW13 FPPREW14 FPPREW15
FPPREW16 FPPREW17 FPPREW18'
foreach s ($subj)
stxgrinder-sess -contrast omnibus -analysis ${analysis} -s ${s} -d
${mypath}
stxgrinder-sess -contrast pun_v_noinc -analysis ${analysis} -s ${s}
-d
${mypath}
stxgrinder-sess -contrast rew_v_noinc -analysis ${analysis} -s ${s}
-d
${mypath}
stxgrinder-sess -contrast pun_v_rew -analysis ${analysis} -s ${s} -d
${mypath}
stxgrinder-sess -contrast rew_v_pun -analysis ${analysis} -s ${s} -d
${mypath}
end
Step4
set analysis = 'moneygamma_test'
set subj = 'FPPREW01 FPPREW02 FPPREW03 FPPREW04 FPPREW05 FPPREW06 FPPREW07
FPPREW08 FPPREW09 FPPREW10 FPPREW11 FPPREW12 FPPREW13 FPPREW14 FPPREW15
FPPREW16 FPPREW17 FPPREW18'
set glist = 'GROUPLIST'
set group = 'Controls'
set contrasts = 'omnibus pun_v_noinc rew_v_noinc pun_v_rew rew_v_pun'
foreach s ($subj)
foreach anal ($analysis)
func2tal-sess -res 4 -analysis ${anal} -d . -s ${s}
foreach hemi (lh rh)
func2sph-sess -analysis ${anal} -hemi ${hemi}
-projfrac .3 -d . -s ${s}
sphsmooth-sess -smoothsteps 10 -analysis ${anal}
-insphdir sph -outsphdir
sphsm10 -hemi ${hemi} -d . -s ${s}
end
end
end
foreach c ($contrasts)
isxavg-re-sess -analysis ${analysis} -group ${group} -space tal -d .
-sf
${glist} -contrast ${c}
foreach hemi (lh rh)
isxavg-re-sess -analysis ${analysis} -group ${group} -space
sph -hemi ${hemi}
-d . -sf ${glist} -contrast ${c}
end
end
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Avram Holmes
Department of Psychology
Harvard University
1210 William James Hall Phone:(617) 495-0790
33 Kirkland Street Fax:(617) 495-3728
Cambridge, MA 02138, USA Email: [EMAIL PROTECTED]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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--
Douglas N. Greve, Ph.D.
MGH-NMR Center
[EMAIL PROTECTED]
Phone Number: 617-724-2358 Fax: 617-726-7422
In order to help us help you, please follow the steps in:
surfer.nmr.mgh.harvard.edu/fswiki/BugReporting
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