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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 +322/650.42.62 Hôpital Erasme 808 route de Lennik B-1070 Brussels, Belgium