fNIRS data (no MRI) & surface projection, suma

AFNI Message Board
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Hello

I am using afni programs to run 3d analyses on my fNIRS data. Now, I’m interested in projecting images onto a brain surface. Is this possible with just fNIRS data and afni tools, or must I have MRI structural data, too?

Thanks for any advice,
Jessica

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You can map all kinds of data onto a surface and view them with suma. We typically use a niml or 1D text format that encodes columns of values that correspond to the surface nodes. You can make additional surfaces like spheres or use a brain surface to give them a place in space. While it’s not exactly the same thing, we do something like this for the ALICE software for ECOG. If you would like, you can send me a message or email for more discussion.

https://doi.org/10.1016/j.jneumeth.2017.10.022

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Thank you for replying. I am going to put the surface projection on hold for now finish up the paper I’m working on. I will reach out to you once I get there!

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Hi-

Pursuant to this point, Daniel has constructed a nice tutorial about different ways (no less than 5!) to make+view spheres in SUMA:
https://afni.nimh.nih.gov/pub/dist/doc/htmldoc/tutorials/rois_corr_vis/suma_spheres.html

These could be combined with some of the automatic snapshotting capability of SUMA, too; for example, see here:
https://afni.nimh.nih.gov/pub/dist/doc/htmldoc/tutorials/rois_corr_vis/cat_netcorr.html#drive-suma-to-save-snapshots-of-the-surface-view-along-some-major-planes

–pt