Scientists Scan the Brains of Mice Playing Quake

By putting sensors in the brains of mice as they ran through a Quake-derived virtual reality, scientists have found a way to study neurological activity in moving animals. The setup allows for real-time, almost-real-motion tracking of single neurons. That feat has eluded researchers who have a fuzzy, general understanding of brain systems, but little knowledge of how individual cells actually work. They hope that cell-level details will make sense of motion, cognition and other complex mental functions