MOTOR UNIT

People who work out regularly, whether lifting weights or running marathons, have muscles that respond differently to signals from the brain. These signals come from nerve cells called motoneurons. Scientists wanted to see how these nerve cells change with different types of exercise. They studied

Imagine trying to pick out a single guitar riff from a busy rock song. That's similar to what scientists are doing with muscle signals, known as surface electromyography (sEMG). They're aiming to spot tiny muscle units, called motor units (MUs), in real time. A recent study took a clever approach us