Mice quickly learn a fearful response to a situation perceived as threatening, but for such a conditioned response to become long-lasting requires brain cells to increase amounts of an insulating material called myelin, which may serve to reinforce and stabilize newly formed neural connections, scientists at UC San Francisco report. “We find that a single… Read more

Focusing on the neutral details of a disturbing scene can weaken a person’s later memories — and negative impressions — of that scene, according to researchers from University of Illinois at Urbana-Champaign. The findings could lead to the development of methods to increase psychological resilience in people who are likely to experience traumatic events, like… Read more

Cannabidiol (CBD) alters the brain activity in people with psychosis during memory tasks, making it more similar to the activation seen in people without psychosis during the same tasks, researchers from King’s College London report. “Our study provides important insight into which areas of the brain CBD targets. It is the first time research has… Read more

A sustained state of vigilance will generate a different type of memory than a momentary startle, and these differences are linked to distinct signaling molecules in the brains of mice. Researchers at the RIKEN Center for Brain Science (CBS) have visualized these dynamics in the living mouse brain for the first time, observing fast and… Read more

Having a larger hippocampus doesn’t always reliably predict learning and memory abilities in older adults, research suggests. It’s normal for the hippocampus — a curved, seahorse-shaped structure embedded deep in the brain — to shrink as we age, but it’s much more pronounced in people with mild cognitive impairment or Alzheimer’s disease. Scientists long believed… Read more