Walter Pitts
American logician and computational neuroscientist (1923-1969) · United States · On the map · Academics · Died at 46
Walter Harry Pitts Jr. was an American logician who worked in the field of computational neuroscience.
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A typical day, 30 days to 5 July 2026
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He proposed landmark theoretical formulations of neural activity and generative processes that influenced diverse fields such as cognitive sciences and psychology, philosophy, neurosciences, computer science, artificial neural networks, cybernetics and artificial intelligence, together with what has come to be known as the generative sciences. He is best remembered for having written, along with Warren Sturgis McCulloch, a seminal paper in scientific history, titled "A Logical Calculus of the Ideas Immanent in Nervous Activity" (1943). This paper proposed the first mathematical model of a neural network. The unit of this model, a simple formalized neuron, is still the standard of reference in the field of neural networks. It is often called a McCulloch-Pitts neuron. Prior to that paper, he formalized his ideas regarding the fundamental steps to building a Turing machine in the journal The Bulletin of Mathematical Biophysics in an essay titled "Some observations on the simple neuron circuit."
