ELECTRODES

In actuality, we have no idea what exists outside of us. We experience the world from within ourselves, and we can never actually feel what is outside. For instance, I hear a sound, and lets suppose that there is some influence, or some source that creates a sound wave. The sound wave travels into my ear, hits the membrane, and initiates an electrical current and chemical reactions that my brain interprets as sound. By comparing what I now hear, with the prior experiences that are recorded in my brain, I