Scientists have shown that deep brain stimulation during sleep can help people retain new information. The approach could help people with memory problems related to disorders like Alzheimer's.

A team at Stanford University has reversed memory loss in old mice by flooding their brains with spinal fluid taken from young animals. The finding may hold promise for Alzheimer's research.

Scientists have identified special cells in the human brain that organize movie-like memories, helping us to relive important experiences and events.