Glial cells communicate with one another using calcium waves and an intracellular diffusion of chemical messengers (unlike the serial flow of information along neuronal chains.They are also able to release neurotransmitters and other signal molecules that allows them to coordinate activities across neuronal networks.(Fields, R. Douglas and Beth Stevens-Graham. New Insights into Neuron-Glia CommunicationScience. 2002; 298(5593); 556-562. Accessed 2007.)

French National Centre for Scientific Research studies: glial cells, formerly believed to be just supports for neurons, release molecules that bind to neuronal receptors and facilitate the transmission of information. (Glial cells: essential to brain communication,2006.)