brain networks

The way our brains are wired may reveal a lot about us, according to new research co-authored by scientists at Washington University in St. Louis. For example, people with “positive” behavioral traits, such as sharp memories, many years of education and robust physical endurance, have stronger neural connections between certain brain regions than people with “negative” traits, such as smoking, aggressive behavior and a family history of alcohol abuse.

In patients with early Alzheimer’s disease, disruptions in brain networks emerge about the same time as chemical markers of the disease appear in the spinal fluid, School of Medicine researchers have shown. Pictured is senior author of the study, Beau Ances, MD, PhD, associate professor of neurology and of biomedical engineering.

New research from Washington University in St. Louis offers compelling evidence that a well-connected core brain network based in the lateral prefrontal cortex and the posterior parietal cortex — parts of the brain most changed evolutionarily since our common ancestor with chimpanzees — contains “flexible hubs” that coordinate the brain’s responses to novel cognitive challenges.

Scientists have created a virtual model of the brain that daydreams like humans do. They hope the model will help them understand why certain portions of the brain work together when a person daydreams or is mentally idle. Shown is the study’s senior author, Maurizio Corbetta, MD.