Dear Uta,
You should try the beta-version of the next SPM release. I'll send you
a link off the list. There were some problems with the group inversion
for MEG in the version that is currently publicly available. These
will hopefully be fixed in the next update which should happen in the
near future.
Vladimir
On Tue, Jun 22, 2010 at 5:38 PM, Uta E. Benner
<[log in to unmask]> wrote:
> Hello,
>
> when I'm trying to do Group inversion with MEG Data, I get an error meassage
> (see below) during ReML Iteration.
> When SPM started doing ReML iteration it has some ..NaN values and stops
> iterating after a while. However, this problem is only occuring for group
> inversion, not when I'm doing source localisation individually and only for
> one of my two groups.
> Is there a way to do group inversion anyway?
>
> Thank's a lot
>
> Uta
>
>
> -----------------------------------------------------------------------
> ??? Error using ==> svd
> Input to SVD must not contain NaN or Inf.
>
> Error in ==> spm_logdet at 37
> s = svd(full(C));
>
> Error in ==> spm_reml_sc at 208
> Fc = Ft/2 + e'*hP*e/2 + spm_logdet(Ph*inv(hP))/2 -
> N*spm_logdet(Cq)/2;
>
> Error in ==> spm_mvb_G at 105
> [Cy,h,P,F,Fa,Fc] = spm_reml_sc(X*X',[],Q,size(X,2),hE,hC);
>
> Error in ==> spm_mvb at 114
> M = spm_mvb_G(X,L,X0,G,V);
>
> Error in ==> spm_eeg_invert at 619
> MVB = spm_mvb(AY,UL,[],Q,AQe,16);
>
> Error in ==> spm_eeg_inv_group at 208
> D = spm_eeg_invert(D);
>
> Error in ==> spm_eeg_inv_imag_api>group_Callback at 481
> spm_eeg_inv_group;
>
> Error in ==> spm_eeg_inv_imag_api at 53
> feval(varargin{:}); % FEVAL switchyard
>
> ??? Error while evaluating uicontrol Callback
>
|