From the point of view of one whose interests include real neurons, this lack of identification is unfortunate. I once wrote a book which included some guesses about the essential attributes of neurons. Since that time, many neuron simulation programs have been written. But these programs, although interesting and worthwhile in their own right, have done little to answer the question of the necessary parameters. That is, they do not make much better guesses possible. And yet better guesses would also make for more “intelligent” machines. [22] This paper, submitted after the Symposium, represents a more detailed presentation of some of the issues raised in the discussion sessions at the Symposium and hence, constitutes a worthwhile addition to the Proceedings. INDEX OF INVITED PARTICIPANTS MICHAEL ARBIB Massachusetts Institute of Technology ROBERT H. ASENDORF Hughes Research Laboratories/ Malibu J. A. DALY Astropower/Newport Beach GEORGE DeFLORIO System Development Corp./Santa Monica DEREK H. FENDER California Institute of Technology LEONARD FRIEDMAN Space Technology Labs./Redondo Beach JAMES EMMETT GARVEY ONR/Pasadena THOMAS L. GRETTENBERG California Institute of Technology HAROLD HAMILTON Librascope/Glendale JOSEPH HAWKINS Aeronutronic/Newport Beach CHARLES HENDRIX Space-General Corp./El Monte R. D. JOSEPH Astropower/Newport Beach PETER A. KLEYN Nortronics/Anaheim JOHN KUHN Space-General Corp./El Monte FRANK LEHAN Space-General Corp./El Monte EDWIN LEWIS Librascope/Glendale PETER C. LOCKEMANN California Institute of Technology GILBERT D. McCANN California Institute of Technology C. J. MUNCIE Aeronutronic/Newport Beach C. OVERMIER Nortronics/Anaheim RICHARD K. OVERTON Autonetics/Anaheim DIANE RAMSEY Astropower/Newport Beach RICHARD REISS Librascope/Glendale R. I. ŚCIBOR-MARCHOCKI Nortronics/Anaheim JAMES J. SPILKER Philco/Palo Alto ROBERT M. STEWART Space-General Corp./El Monte HENNIG STIEVE California Institute of Technology RICHARD TEW Space-General Corp./El Monte JOHN THORSEN University of California/Los Angeles RICHARD VINETZ Librascope/Glendale CHRISTOPH von CAMPENHAUSEN California Institute of Technology DAVID VOWLES California Institute of Technology HORST WOLF Astropower/Newport Beach U.S. GOVERNMENT PRINTING OFFICE: 1966 O—205-502