[Mne_analysis] Fwd: Plotting power spectra of estimates on mne_analyze

Kyle Lepage lepage at math.bu.edu
Tue Aug 25 20:22:44 EDT 2009
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Hi Andres, the structure,

raw = fiff_setup_read_raw()

contains the channel names in raw.info.ch_names

For agnostic labeling these names designate left hemisphere and
right hemisphere using 'lh' and 'rh'.  For this case the first
half of the channels correspond to the left hemisphere and the
last half to the right hemisphere.

Best regards,

 Kyle


On Tue, 25 Aug 2009, Sarah Steinvorth wrote:

>
>
>
> Begin forwarded message:
>
> > From: "Andres Felipe Salazar Gomez" <asalazar at nmr.mgh.harvard.edu>
> > Date: August 25, 2009 6:29:31 PM EDT
> > To: "Daniel G. Wakeman" <dgwakeman at gmail.com>
> > Cc: mne_analysis at nmr.mgh.harvard.edu
> > Subject: Re: [Mne_analysis] Plotting power spectra of estimates on
> > mne_analyze
> >
>
> > Thank you Dan,
> >
> > I got the power spectrum in source space (in matlab, after getting the
> > estimates).
> > My problem was that since I used matlab, I did not know which set of
> > the
> > calculated power spectra belonged to either the left or the right
> > group of
> > vertices (for left and right hemispheres).
> >
> > It seems the first half of results belongs to the left hemisphere
> > and the
> > second to the right one.
> > Is this correct?
> >
> > Thanks for your comments,
> >
> > -- Andrés
> >
> >
> >> Hi Andres,
> >>
> >> I'm not sure what you mean by "way to link channels and vertices."
> >>
> >> This seems to suggest you created your power spectrum in sensor
> >> space. Is this true?
> >>
> >> If so what did you use the forward matrix for?
> >>
> >> If you got the power spectrum values in source space (using some
> >> inverse
> > solution), then the solution to your problem is easy. Just use one of
> > the functions below to write those values to either a w file or stc
> > file.
> >>
> >> Dan
> >> On 25 Aug 2009, at 21:44, Andres Felipe Salazar Gomez wrote:
> >>
> >>> Hi MNE users,
> >>> I want to plot on mne_analyze the power spectrum values of a set of
> > estimates obtained from a raw file. I got  the estimates in matlab
> > using
> >>> the forward matrix, the raw file and the noise covariance matrix
> >>> but I
> > have not been able to create a file that mne_analyze can load and plot
> > on
> >>> the cortex.
> >>> I understand mne_write_stc_file (although this one seems to be for
> >>> time
> >>> domain files) or mne_write_w_file can help me but I am not sure
> >>> how to use
> >>> them since I do not have a way to link channels and vertices.
> >>> Thank you very much for your help,
> >>> --
> >>> Andres F. Salazar
> >>> Research Technologist
> >>> Neuroscience Statistics Research Laboratory
> >>> asalazar at nmr.mgh.harvard.edu
> >>> 149 13th Street, Room 4005
> >>> Charlestown, MA  02129
> >>> _______________________________________________
> >>> Mne_analysis mailing list
> >>> Mne_analysis at nmr.mgh.harvard.edu
> >>> https://mail.nmr.mgh.harvard.edu/mailman/listinfo/mne_analysis
> >>
> >>
> >>
> >
> >
> > --
> > Andres F. Salazar
> > Research Technologist
> > Neuroscience Statistics Research Laboratory
> > asalazar at nmr.mgh.harvard.edu
> > 149 13th Street, Room 4005
> > Charlestown, MA  02129
> >
> >
> >
> > _______________________________________________
> > Mne_analysis mailing list
> > Mne_analysis at nmr.mgh.harvard.edu
> > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/mne_analysis
> >
> >
>




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