The term stimulus is also called impulse stimulare, means to goad, prod, or urge dies in Latin. This relates to stimulus because it provoke a compulsion to make an organism change its behavior. The urge relay a potential internal stimuli occurring in its own body to make a move. An example of this is hunger and thirst where the body send signals for a need of more energy and hydration. This causes human and animal to search for food and water.