Your brain tells your muscles what to do by sending electrical signals to them. The signals travel down your spinal cord and then through different nerves to your muscles.
EMG and nerve conduction studies are tests to see if you have muscle weakness or loss of feeling from an injury to your spinal cord, muscles, or nerves.
Doctors may do an EMG, nerve conduction study, or both if you have symptoms like tingling or muscle weakness. These symptoms can be caused by many problems in different parts of your body. An EMG or nerve conduction study can help your doctor tell if your symptoms are caused by nerve or muscle problems such as:
During an EMG:
During a nerve conduction study: