[Mne_analysis] Strange field maps with mne.make_field_map function

Alexandre Gramfort alexandre.gramfort at telecom-paristech.fr
Tue Oct 27 17:14:45 EDT 2015
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hi,

indeed this looks fishy. I have no idea of what's going on.

maybe someone can look into it?

Alex

On Mon, Oct 26, 2015 at 11:17 AM, Bushra Riaz <bushrariaz_86 at hotmail.com> wrote:
> Hello
> I am using mne.make_field_map function to plot fields on head surface in
> python and extrapolate fields to head surface option in MNE-C, both showed
> same strange results for my data.
> You can find some figures at following link to see the results
>
> https://www.dropbox.com/sh/x9fygyt853ipdia/AACdETxmNBQ8ahSHDTsbucQRa?dl=0
>
>  I hope somebody could explain it.
> The butterfly plot of evoked data for visual stimuli is in figure 1,
> topographical map at 110 ms is in figure 2, the field maps on helmet is in
> figure 3 and the field maps on head surface is in figure 4. I don’t
> understand the strong field on top of the skull surface in figure 4, which
> is no where seen in fields on helmet or on topographical map.
>
> Kind regards
> Bushra Riaz
>
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