A specific network can be represented as a physiologically (or anatomically) connected network and modeled that way. There are several approaches to this (see Ascoli, G.A. (2002)[1] Sporns, O. (2007),[6] Connectionism, Rumelhart, J. L., McClelland, J. L., and PDP Research Group (1986),[3] Arbib, M. A. (2007)[7]). Or, it can form a functional network that serves a certain function and modeled accordingly (Honey, C. J., Kotter, R., Breakspear, R., & Sporns, O. (2007),[8] Arbib, M. A. (2007)[7]).