Another fascinating article. Reminds me of a BBC documentary (back in the days when I watched the cathode propaganda machine) of the effects of MDMA on rats versus effect of alcohol. The MDMA group scans and movement traces showed a clear repetative motion around the edge of their enclosure , the scan showing a small area of brain stimulated.
The Alcohol group iirc were totally haphazard, aggresive, and the scans showed the whole brain red as the cells died. Best anti drink documentary Ive ever seen.