How to visualize interpolated (32-channels) EEG topography on a smooth head surface?

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1

Hi,

I’m trying to make pretty figures for publication. I’d like to show a 3D view of the EEG topography. The EEG has only 32 channels, so when using the 3D sensor view, the cap surface has sharp angles everywhere and does not really fit the head. The scalp even goes through on some locations. I tried the “Display on scalp” view to get something smoother, but it looks very patchy, as if there was no spatial interpolation or smoothing of the EEG. Is there a way I can get the same type of spatially-smoothed EEG data as on the 3D sensor view, but projected on a smooth high-resolution scalp surface?
Thanks in advance for your help,

Dorothée

2

This function was indeed a bit outdated.
I integrated the smoothing I developed for the 2D/3D figures for the scalp projections as well:
Display EEG on scalp: Use same smoothing as for the 2D/3D topo figures · brainstorm-tools/brainstorm3@87668e2 · GitHub

Update Brainstorm to get this fix.
Does it do what you expect?

image

1 Like
3

It is much nicer this way, thank you Francois!