Mice fidget. Those motions have big effects on their brains

Extra movements may shape thinking, a study hints 

mice brains

In the brains of mice trained to do a job, nerve cell activity (shown) is more tightly linked to irrelevant body movements than to the job itself, researchers found.

A. Churchland

Survey any office, and you’ll see pens tapping, heels bouncing and hair being twiddled.