Legal and illegal drugs are killing more people than AIDS ever did, yet the nation’s drug policies are based on unproven assumptions about addiction. Neuroscience could help shape more effective policies and save lives.
Researchers long believed that the cerebellum did little more than process our senses and control our muscles. New techniques to study the most densely packed neurons in our brains reveal that it may do much more.
A central tenet in neuroscience has been that the amount of brain tissue goes in one direction throughout our lives – from too much to just enough. A new study finds that in some cases the brain can add tissue as well.