Dear Anette and Vladimir,
Sorry this function needs more debugging, so is not ready for release yet - it
will be available in SPM12.
Best, Will
> -----Original Message-----
> From: Vladimir Litvak [mailto:[log in to unmask]]
> Sent: 24 February 2012 10:16
> To: Anette Giani
> Cc: [log in to unmask]; Penny, William
> Subject: Re: M/EEG: doing statistics on source wave data
>
> Dear Anette,
>
> 1D stats are not supported so well at the moment. There is some code
> Will Penny wrote that he can perhaps share with you, but you'll need
> some programming for that. There is nothing in the GUI but it's on my
> todo list.
>
> Best,
>
> Vladimir
>
> On Fri, Feb 24, 2012 at 9:02 AM, Anette Giani
> <[log in to unmask]> wrote:
> > Dear Vladimir and SPM-M/EEG experts,
> >
> > I extracted source wave forms from auditory cortex (left and right)
> > for 4 different conditions. Now, I would like to test statistically
> > where those conditions differ in time. To do statistics in SPM data
> is
> > usually transformed to images. Given that I have only 2
> > channels/sources the traditional way of interpolating between
> channels
> > does not seem appropriate and even gives an error:
> >
> > ??? Error using ==> convhull
> >
> > Error computing the convex hull. Not enough unique points specified.
> >
> >
> >
> > Error in ==> spm_eeg_locate_channels at 43
> >
> > ch = convhull(Cel(:, 1), Cel(:, 2));
> >
> >
> >
> > Error in ==> spm_eeg_convert2scalp at 107
> >
> > [Cel, Cind, x, y] = spm_eeg_locate_channels(D, n, interpolate_bad);
> >
> >
> >
> > Error in ==> spm_eeg_convert2images at 287
> >
> > [S, Pout] = spm_eeg_convert2scalp(S);
> >
> >
> >
> > Error in ==> spm at 982
> >
> > evalin('base',CBs{v-1})
> >
> > ??? Error while evaluating uicontrol Callback
> >
> >
> >
> > Could you suggest on any other way of doing statistics on source wave
> data?
> >
> >
> >
> > Looking forward to your suggestions!
> >
> > Best,
> >
> > Anette
> >
> >
> >
> > @ Vladimir (response to mail: [SPM] M/EEG: problems with sourcewave
> > extraction). I tried IID on a finer mesh, which indeed improved
> source
> > wave extraction, i.e. data is much smoother. Thanks for your
> suggestions.
> >
> >
