I’m waiting for responses to this:
https://awg.osdr.space/t/eeg-data-on-space-conditions/648
But I suppose you are minning something like this:
https://genelab.nasa.gov/search/node?keys=brain
I’m primarily interested in Homo sapiens, but while I’m waiting for a response, it might be useful for me to review data on other species as well. If you need anything, perhaps I can collaborate with you.