first_level_from_bids - More granularity in subject/session selection

[andreaboscutti]

I have another potential suggestion regarding the ability to access sessions with more granularity. The img_filters=[('ses', '01')] works great, but in some instances, a user may want to select specific subsets of sessions for different subjects. This would require some refactoring of the BIDS-related functions. I’d be happy to contribute if this is considered a useful addition.

Originally posted by @andreaboscutti in #3068 (comment)

[bthirion]

Thx for the suggestion. I think that we need to decide how far we want to push BIDS support in Nilearn. I would assume that people use other frameworks for fine-grain BIDS control, but maybe not ?

[Remi-Gau]

@andreaboscutti could you provide an example where the current API is adding too much friction for you?