Your VOI's must be from a second level analysis. There are 122 voxels in the
VOI but these are from only 24 scans. The VOI's must be from a first level
analysis. The eigenvariate button is the correct one to use.
Darren
> -----Original Message-----
> From: Rodolphe [mailto:[log in to unmask]]
> Sent: Wednesday, April 02, 2008 2:35 AM
> To: d gitelman
> Subject: Re: [SPM] DCM problem
>
> Thx for the advices, i typed these commands, No problem for
> the spm.mat there is a sess field.
> But for my VOI i just obtained:
> xyz: [3x1 double]
> name: 'VOI-1'
> Ic: 0
> def: 'sphere'
> spec: 8
> XYZmm: [3x122 double]
> X0: [24x0 double]
> y: [24x122 double]
> u: [24x1 double]
> v: [122x1 double]
> s: [24x1 double]
>
> I created them with the eigenvariate button, maybe this is a
> mistake...
>
>
>
> 2008/4/1, d gitelman <[log in to unmask]>:
>
> Hi Rodolphe
>
> Please try the following.
>
> Start Matlab and spm5. At the prompt type
>
> % select the same SPM.mat file you are using
> % for DCM
> >> load(spm_select(1,'SPM.mat'))
> >> SPM.Sess
>
> if there is an error then the SPM.mat file is at fault.
> if there is no error type the following.
>
> % select each of you VOI files in turn
> >> load(spm_select(1,'mat'))
> >> xY
>
> See if there is field called Sess, then load the next
> VOI. Based on what you
> are saying my guess is that one of your VOI files is
> incorrect and does not
> have a Sess field.
>
> Darren
>
>
>
>
>
> > -----Original Message-----
> > From: Rodolphe [mailto:[log in to unmask]]
> > Sent: Tuesday, April 01, 2008 8:33 AM
> > To: d gitelman
> > Subject: Re: [SPM] DCM problem
> >
> > Dear Darren,
> >
> > i promise i choose a first level spm.mat.
> > To be sure, i created a test .mat with one run for one
> > subject... (click on 1st level, then specify the images and
> > onset, etc...then run and estimate, thats all!)And i got the
> > same error message.
> > Moreover, when i review my model, the menu indicates clearly
> > "Session1" and then my contrast name...
> >
> >
> >
> > 2008/4/1, d gitelman <[log in to unmask]>:
> >
> > It appears you may be choosing the SPM.mat of a second
> > level model. First
> > level models contain Sess fields. Please check your
> > SPM.mat file.
> >
> > Darren
> >
> >
> > > -----Original Message-----
> > > From: SPM (Statistical Parametric Mapping)
> > > [mailto:[log in to unmask]] On Behalf Of Rodolphe
> > > Sent: Tuesday, April 01, 2008 7:54 AM
> > > To: [log in to unmask]
> > > Subject: [SPM] DCM problem
> > >
> > > Dear spmers,
> > >
> > > In order to do a dcm analysis, i click on the
> dcm button
> > > (With the last version of smp5) then i
> specify my 1st level
> > > spm.mat (for 1 subject), i specify a name for
> the dcm matrix,
> > > i give some vois and then matlab write the following
> > error message :
> > >
> > > ??? Reference to non-existent field 'Sess'.
> > >
> > > Error in ==> spm_dcm_ui at 136
> > > Sess = SPM.Sess(xY(1).Sess);
> > >
> > > ??? Error using ==> spm_dcm_ui
> > > Reference to non-existent field 'Sess'.
> > >
> > > ??? Error while evaluating uicontrol Callback
> > >
> > > I tried to find the problem without success,
> the dcm tutorial
> > > works fine but i cant see whats the
> difference with my data...
> > >
> > > Thx,
> > >
> > > rodolphe
> > >
> > >
> >
> >
> >
> >
> >
> >
>
>
>
>
>
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