God helmet. More info here where it's sold for $650. Kooky or credible or both?

Also, anyone know where to buy transcranial magnetic stimulation devices? Closest I found was this without an easily findable price tag. If not, do any engineers know if they'd be difficult to build?

I found a place that does TMS sessions in Berkeley that treat depression. Website here. I'll do more research to figure out if it'd be useful for things other than depression. This looks potentially promising, but I haven't found the original study yet (using Google Scholar).