Adult depression has long been associated with shrinkage of the hippocampus, a brain region that plays an important role in memory and response to stress. Now, new research from Washington University in St. Louis has linked participation in team sports to larger hippocampal volumes in children and less depression in boys ages 9 to 11.
Researchers in Arts & Sciences at Washington University in St. Louis are challenging the notion that environment drives the evolution of brain size. A new study was released Sept. 25 in the journal Nature Ecology and Evolution.
Do big-brained creatures steal energy for them from other organs or eat more to supply this expensive tissue? New work in large-brained fish suggests skimping elsewhere is not enough to meet the energy demands of an extreme brain.