When I was a graduate student in Baylor College of Medicine I participated in an “exercise and brain” study in our lab as a subject, and got my brain scanned every week for about 10 weeks. I thought it was crazy; but apparently it’s not nearly as crazy as Russell Poldrack, a Stanford psychologist, who scanned his brain for 18 months, twice a week. Wow!
The result was published in Nature Communications in December, 2015.
I find what is amazing is that they shared their data publicly online. You can download the data at http://myconnectome.org/wp/.
Russell Poldrack’s Lab link: https://poldracklab.stanford.edu/