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Re:DARPA grant to work on sensing and stimulating the brain ... by omgitsabird on Thursday September 02, 2021 @11:35PM (#28400134)
A couple of studies linked in Wikipedia for this use (one retracted):

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4049706/

Retracted: https://journals.plos.org/plosbiology/article?id=10.1371/jou...

Table with resolution differences between different techniques:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8116487/table/T...

Re:DARPA grant to work on sensing and stimulating the brain ... by westurner on Friday September 03, 2021 @06:31AM (#28402458)
> Table with resolution differences between different techniques:

Looks like MEG has the best temporal and spatial resolutions.