Computer and the Brain

Computer and the Brain

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by John Von Neumann
     
 

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This book, composed of material prepared for the Silliman Lectures by john von Neumann before his death, represents the views of one of the greatest mathematicians of the twentieth century on the analogies between computing machines adn the living human brain. He concludes that the brain operates in part digitally, in part analogically, but uses a peculiar

Overview

This book, composed of material prepared for the Silliman Lectures by john von Neumann before his death, represents the views of one of the greatest mathematicians of the twentieth century on the analogies between computing machines adn the living human brain. He concludes that the brain operates in part digitally, in part analogically, but uses a peculiar statistical language unlike that employed in the operation of man-made computers. At the time of his death in February 1957, Dr. von Neumann, renowned for his theory of games and his work at the Electronic Computer Project at the Institute for Advanced Study, was serving as a member of the Atomic Energy Commission. A year earlier, he had written: "I still cherish the hope that I will be able to deliver hte Silliman Lectures as planned." These plans were never brought to fruition, however, and the manuscript for this book constitutes the last writing to come from him.

Editorial Reviews

S. Ulam
Highly original and intensely stimulating.
Scientific American
Mathematical Review
An outstanding example of J. von Neumann's insight, brilliance and clarity.

Product Details

ISBN-13:
9780300007930
Publisher:
Yale University Press
Publication date:
10/28/1958
Series:
Silliman Lectures

What People are saying about this

Paul and Patricia Churchalnd
This innocent-looking little book lies at the eye of a hurricane. It represents a locus of clarity and calm at the center of a vast vortex of powerful arguments and competing research programs. And it is all the more singular for having been written . . . at the very beginning of the recent explosion in electronic computer technology.(Paul and Patricia Churchland, from the foreword)

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The Computer and the Brain 5 out of 5 based on 0 ratings. 1 reviews.
Guest More than 1 year ago
Perhaps the most famous and often quoted line in this remarkable book appears at the beginning of Part II, where von Neumann declares that 'The most immediate observation regarding the nervous system is that its functioning is prima facie digital.' The 'prima facie' modifier is commonly taken to mean von Neumann saw the brain as 'obviously digital,' or 'patently digital,' and that it therefore must resemble a digital computer. But as you read the rest of the book, you quickly discover that this is not what John von Neumann intended. Von Neumann uses words cautiously and precisely, and to him, 'Prima facie' means exactly what it says: 'on its face.' In 1956, the brain appeared digital. But von Neumann thought this impression might be superficial. He thought that deeper biological investigation might well demonstrate that the nervous system is not, in fact, digital, or not completely digital. He believed it might work in some more sophisticated way, and suggests that perhaps some intermediate signaling mechanism, a hybrid between analog and digital, might be at work in the brain. For this and other reasons he actively resisted labeling the brain as a digital computer. In the mid 90s, evidence began to appear that von Neumann was probably right to reserve his judgment. These curious new results show that a single nerve impulse is somehow able to convey information to the brain. This is distinctly un-digital. A number of theories have popped up, some attempting to explain this whopping new mystery, others attempting to explain it away. But its impact on neurophysiology, and on conventional computer models of the brain, is pretty shocking. Not to say, devastating. (See Spikes, by Rieke et al, for a readable account of this story.) When the smoke clears, it would not be surprising if people go all the way back to John von Neumann, looking for traction, fresh starting points, and for von Neumann's wonderfully broad sense of what is possible in neurobiology - a sense we have evidently lost to 'progress' in the years since he wrote this splendid essay. Von Neumann did not include in this book his interesting views on the nervous system of the eye. He was an early adopter of visual memory systems in digital computers, and he was evidently intrigued by the way the retinal cells of the eye are arranged to look backward, that is, toward the screen of the back wall of the eye. Possibly he thought the retinal cells saw back there a thin film diffraction pattern. You can find his interest in the nervous system of the eye remarked in his brother Nicholas Vonneumann's book, John von Neumann as seen by his Brother, and this reminiscence is also paraphrased in Poundstone's Prisoner's Dilemma. Finally, some of the worldly story of von Neumann, his digital computers, and their role in the creation of the hydrogen bomb can be found in MaCrae's biography.