Electrical Signal (IMAGE) Moscow Institute of Physics and Technology Caption The type of electrical signal transmitted by neurons (a "spike"). The red lines are various other biological signals, the black line is the averaged signal. Credit MIPT press office Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.