Alzheimer’s may hijack memory not by stopping the brain’s replay — but by scrambling it just when memories should be taking hold. Credit: Shutterstock New research suggests that memory problems in Alzheimer's disease may be linked to a failure in how the brain replays recent experiences while at rest. The study, conducted in mice by scientists at University College London (UCL), points to a disrupted brain process that normally helps strengthen and preserve memories. The researchers say their