The NIH Record describes Larry Wald's work developing the tools and instrumentation that are essential for scientific progress.
Casual marijuana use changes brain structures involved in reward, emotion and motivation
Even casual use of marijuana appears to cause significant structural changes in key brain structures of young adults, a new study finds. In a report in the April 16 Journal of Neuroscience, researchers from the MGH Martinos Center and Northwestern University describe finding differences between casual users of marijuana and non-users in the size, shape, and structure of brain regions involved with motivation, emotion and reward. Read more about the study here.