How to create SourceSpaces WITHOUT MRI?

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1
  • MNE version: 1.8.0
  • operating system: Windows11

Hello,

I’m trying to do some simulations with the simplest situation, namely the sphere model. I followed the tutorial and learned how to create MNE-Python data structures from scratch, including info,ConductorModel objects.

But to build a forword solution, I have to create SourceSpaces object as well. And according to the api document there are three functions related to this: setup_source_space,setup_volume_source_space and read_source_spaces.

However, the functions setup_source_space and setup_volume_source_space both need subject path as an argument, and read_source_spaces needs a FIF fie.

What should I do if I just use a spherical head, WITHOUT MRI, and create
a SourceSpaces object? Thanks!

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I don’t know about a spherical head, but if you do not have a specific MRI, you could use fsaverage, see: mne.datasets.fetch_fsaverage — MNE 1.8.0 documentation