And let's follow our electric signal as it begins on one part of the body and ascends somewhere else. So let's suppose we take our finger and we pinch or we take a prick and we prick our finger and let's see what happens. So on our finger, let's say we apply pressure. We have specific types of receptors, pressure receptors that basically take that pressure and create and transform that pressure into an electrical signal. And that electrical signal is picked up by the sensory neuron. Remember, the sensory neuron is our neuron known as the African neuron that picks up the signal that comes from the environment by that receptor and sends it into the central nervous system.