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Thank very much,
we tried but it is still not working.

First, we tried via MEEGtools-Copy MEG sensors, we select first the SPM/EEG file and then we selected the .fif file and we get this error:
??? Error using ==> read_headshape at 159
Digitiser point (1) not stored in head coordinates!

Error in ==> fileio_read_headshape at 11
[varargout{1:nargout}] = funhandle(varargin{:});

Error in ==> spm_eeg_copygrad at 17
D = fiducials(D, forwinv_convert_units(fileio_read_headshape(ctffile), 'mm'));

Error in ==> spm_MEEGtools at 39
eval(fun);
Error in ==> spm at 921
    evalin('base',xTB(i).prog);
 
??? Error while evaluating uicontrol Callback

We can't find any information in the manual in how this function works,
could you be more explicit on how to use it?

Thank you very mich,
Sophie


2013/1/10 Vladimir Litvak <[log in to unmask]>
The bug is in the projection from 3D to 2D. But if you want to proceed to source modelling you should re-read the sensors to a pre-ICA dataset and then re-apply your ICA montage.

Vladimir



On 10 Jan 2013, at 08:08, Sophie Galer <[log in to unmask]> wrote:

Thank you very much for your quick answer.

Does it prevent me to continue to analyze my data (average, sensor space, ...) ? is it a bug of the graphic interface or the bug concern the localisation of the sensors?

Best,
Sophie

2013/1/9 Vladimir Litvak <[log in to unmask]>
Dear Sophie,

It looks like a bug that was recently fixed. It doesn't necessarily have to do with ICA. I would suggest you to try the next SPM8 update when it comes out (should be really soon). You might have to re-read your sensor representation using 'Copy MEG sensors' in MEEGtools and then project your channel positions to 3D again using 'Prepare'.

Best,

Vladimir



On 9 Jan 2013, at 16:04, Sophie Galer <[log in to unmask]> wrote:

>
> Dear SPM experts,
> I have applied ICA to my MEG data to remove blink artefacts.
> The ICA transformation is executed at the last step of the preprocessing.
> We used spm_eeg_montage.
>
> The processus is working but when i looked at the topo plot of one trial (trial i knew
> was contamined by a blink) via the display of the GUI, i get an error (see below) and the image is not normal (see attached).
>
> Warning: Duplicate x-y data points detected: using average of the z values.
> > In griddata at 105
> > In spm_eeg_plotScalpData>doChangeTime at 248
>
> Does anyone know where the problem come from?
>
>
> Thank you very much for your answer,
> --
> Sophie Galer - Ph.D. student
> National Fund for Scientific Research (F.R.S - FNRS)
> Université Libre de Bruxelles
> LCFC-UR2NF
> +322/555.42.98
> +322/650.42.62
> Hôpital Erasme
> 808 route de Lennik
> B-1070 Brussels, Belgium
> <133_ICA.jpg>



--
Sophie Galer - Ph.D. student
National Fund for Scientific Research (F.R.S - FNRS)
Université Libre de Bruxelles
LCFC-UR2NF
+322/555.42.98
Hôpital Erasme
808 route de Lennik
B-1070 Brussels, Belgium



--
Sophie Galer - Ph.D. student
National Fund for Scientific Research (F.R.S - FNRS)
Université Libre de Bruxelles
LCFC-UR2NF
+322/555.42.98
+322/650.42.62
Hôpital Erasme
808 route de Lennik
B-1070 Brussels, Belgium