Neuromodulation is like giving your brain a "jolt" of electricity. When you're feeling down or you have difficulty focusing, neuromodulation can be used to help. It works by sending electrical signals to different areas of the brain to help improve your mood or get your mind working better. With neuromodulation, machines are used to send electrical signals that make your brain work differently so that you can think better or feel better. It is like giving your brain a tune-up to help it work better.