Electrical impulses refer to sudden bursts or pulsations of electrical energy that travel through a conductor, such as an electrical wire. These impulses can be generated by various sources, including electronic devices and biological systems in the body. In the context of human physiology, electrical impulses are responsible for transmitting signals within the nervous system, allowing communication between different parts of the body. For example, when a person feels pain or touch, it is due to electrical impulses being sent from the affected area to the brain via nerve cells. In summary, electrical impulses refer to sudden bursts of electricity that facilitate communication and signal transmission in both electronic devices and biological systems.