3871 entries. Last updated May 18, 2013.

The First Mathematical Model of a Neural Network (1943)


American neurophysiologist and cybernetician of the University of Illinois at Chicago Warren McCulloch and logician Walter Pitts published “A Logical Calculus of the ideas Imminent in Nervous Activity,” describing the McCulloch - Pitts neuron, the first mathematical model of a neural network.

Building on ideas in  Alan Turing’s “On Computable Numbers”, McCulloch and Pitts's paper provided a way to describe brain functions in abstract terms, and showed that simple elements connected in a neural network can have immense computational power. The paper received little attention until its ideas were applied by John von Neumann, Norbert Wiener, and others. (See Reading 7.4.)