And none of my array stuff is published yet (grrr!) I did single-electrode experiments for my PhD and those definitely mess up the brain after a while. The Uta

And none of my array stuff is published yet (grrr!) I did single-electrode experiments for my PhD and those definitely mess up the brain after a while. The Utah array stuff strikes me as "less bad" in there's only one* big insult to the brain, but it is a pretty bad one: the arrays are inserted with a pneumatic "gun". I think you're right that non-invasive techniques will never give us single unit data, though I hope we can get some longer-lasting implantable electrodes soon.