Electrical excitability refers to the property of an organism, cell, or tissue to respond to electrical signals. Synonyms for this term include electrical responsiveness, electrical reactivity, and electrical sensitivity. These terms describe the ability of certain cells or tissues to generate electrical impulses when stimulated by a certain signal. Other synonyms include electrical conductivity, which is the ability of a material to transmit electrical signals, and electrical impulse transmission, which refers specifically to the movement of electrical signals along nerves. All of these terms highlight the importance of electrical signals in biological processes and the necessity for certain cells and tissues to be able to respond to them.