A rare group of neurons can reconnect broken spinal circuits and trigger leg muscle activity after spinal cord injury—a discovery that could help refine future stem-cell therapies for paralysis. The ...

The human brain holds a staggering number of connections, yet scientists have long struggled to explain how it stores so much ...

Alzheimer's is a devastating disease that results in memory loss and cognitive decline. It's caused by brain cells dying and the brain itself shrinking from a buildup of proteins. Millions of seniors ...