Adolescence is widely thought to be a time when the brain trims away excess neural connections, refining circuits through synaptic pruning. New research now suggests this view may be incomplete.

When it comes to brain proteins, small changes can make a dramatic difference. Researchers studying NMDA (N-methyl-D-aspartate) receptors, which are essential for learning, memory and moment-by-moment ...

For many heartbreaking diseases of the brain — dementia, Parkinson’s, Alzheimer’s and others — doctors can only treat the symptoms. Medical science does not have a cure. Why? Because it’s difficult to ...