How the brain decides what to learn

Neuroscientists know a lot about how our brains learn new things, but not much about how they choose what to focus on while they learn. Now, Stanford researchers have traced that ability to an unexpected place.

A new map of the brain’s serotonin system

New findings reveal that the brain’s serotonin system ­– which regulates everything from our moods to our movements – is made up of multiple parallel pathways that affect the brain in different, and sometimes opposing, ways.

Deep learning comes full circle

Artificial intelligence drew much inspiration from the human brain but went off in its own direction. Now, AI has come full circle and is helping neuroscientists better understand how our own brains work.

Study reveals concussion’s complex nature

Concussion is a major public health problem, but not much is known about the impacts that cause concussion or how to prevent them. Bioengineer David Camarillo and colleagues suggest that the problem is more complicated than previously thought.