PUBLICATIONS MEETING AND REPORTS PAPERS PRESENTED Department of Neurology, University of California Medical Center, San Francisco, California June 5-7, 1961 W. S. McCulloch, Lecture on Bionics to Post Doctoral Fellows (invited) Lecture to Psychiatric Residents (invited) Decision making (general lecture) (invited) An adequate logic for the circuit theory of nervous activity (invited Neurology Seminar) Colloquium, National Science Foundation, Washington, D. C. June 7, 1961 W. A. Rosenblith, (invited) The role of computer techniques in research on brain function Nineteenth Annual Conference on Electron Device Research, Rensselaer Polytechnic Institute, Troy, New York June 21-23, 1961 A. Bers and R. Pawula, An exact formulation of klystron gap interaction, electromagnetic and kinetic power flows W. D. Getty and L. including D. Smullin, Strong interaction between a beam and a plasma American Physical Society June Meeting, Mexico City D. F. June 22-24, J. 1961 S. Waugh and C. S. Johnson, Jr., Nuclear relaxation in gaseous mixtures National Convention on Military Electronics, Washington, D. C. June 26-28, 1961 S. C. Brown, Plasma physics in review (invited) Research Conference on the Chemistry and Metallurgy of Semiconductors, Tilton, New Hampshire July 10-14, 1961 W. S. McCulloch, Special Discussion on Bionics (invited) Lecture at Centre National de Recherches Scientifiques, July 12, Bellevue, 1961 H. H. Stroke, Structure hyperfine et le Noyau (invited) France Tilton School, MEETING PAPERS PRESENTED (continued) The Fourth International Conference on Medical Electronics, 1961 July 16-21, J. New York S. Barlow, A versatile analog computer for neurophysiological research M. Eden, Generative versus analytical models; An approach to the description of biological systems D. H. Pruslin and W. D. Jackson, A thermistor flowmeter for blood flow measurement Siebert, Thresholds and detection theory W. M. L. Stark and P. mechanisms A. Willis, The pupil and the hand: A comparison of two neurological Lectures to the Department of Medical Physics, University of Amsterdam, Netherlands July 18-19, 1961 L. Stark, Control system for human coordination (invited) Nonlinear analysis of pupil servomechanism (invited) Colloquium, July 24, Bell Telephone Laboratories, Inc., Murray Hill, New Jersey 1961 M. Eden, The generation of handwriting and its relation to problems of pattern recognition (invited) Lecture to the Department of Physiology, University of Frankfurt, Germany July 26, L. 1961 Stark, Servoanalysis applied to pupillary light reflex (invited) First International Congress of Biophysics, Stockholm, Sweden July 31-August 5, 1961 J. S. Barlow, Possible physiological bases for animal navigation with special reference to inertial guidance navigation systems H. J. C. Berendsen, Nuclear magnetic-resonance studies of collagen hydration M. Eden, An analytic model for the neuromuscular generation of cursive writing H. T. Hermann and L. Stark, Transfer function of a biological photoreceptor T. T. Sandel, Local neuroelectric activation of auditory cortex in cat as measured with gross electrodes L. Stark, Environmental clamping of pupil servomechanism P. A. Willis and L. Stark, Mechanical impedance of the human arm xiii MEETING PAPERS PRESENTED (continued) Gordon Research Conference - Instrumentation - New London, New Hampshire August 14-18, 1961 J. Atwood, Biological noise in the human pupil L. Stark, The pupillary servomechanism Symposium on the Training of Biomathematicians, Western Carolina College, Cullowhee, North Carolina August 18, 1961 J. D. Cowan, Cybernetics and biology (invited) Lecture at the International School of Physics "Enrico Fermi," Varenna, Italy August 21, 1961 H. H. Stroke, Nuclear information obtained from hyperfine-structure and isotope-shift studies (invited) Fifth International Conference on Ionization Phenomena in Gases, Munich, Germany August 28-September 1, 1961 H. Fields, G. Bekefi, and S. C. Brown, Microwave measurements of the radiation temperature of a plasma in a magnetic field S. Gruber, G. Bekefi, and S. C. Brown, Measurements of controlled turbulence in an rf discharge Second Annual Bionics Symposium, Cornell University, Ithaca, New York 30 August-1 September 1961 W. S. McCulloch, Biomimesis (invited) JOURNAL ARTICLES ACCEPTED FOR PUBLICATION (Reprints, if available, may be obtained from the Document Room, 26-327, Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge 39, Massachusetts.) J. C. Bliss and W. P. McCurdy, Linear Models for Contrast Phenomena Soc. Am.) (J. Opt. P. T. Brady, A. S. House, and K. N. Stevens, Perception of Sounds Characterized by a Rapidly Changing Resonant Frequency (J. Acoust. Soc. Am.) B. Farley, Computer Simulation of Neuron-like Nets (Fed. Proc.) B. G. Farley, L. S. Frishkopf, W. A. Clark, and J. T. Gilmore, Computer Techniques for the Study of Patterns in the EEG (Trans. IRE, PGME) xiv JOURNAL ARTICLES ACCEPTED FOR PUBLICATION (continued) C. D. Geisler and G. L. Gerstein, The Surface EEG in Relation to Its Source (EEG Clin. Neurophysiol.) R. B. Hall and S. C. Brown, Reflection of an Electron Beam from High-Frequency Fields (J. Appl. Phys.) A. S. House, On Vowel Duration in English (J. Acoust. Soc. Am.) C. S. Johnson, Jr. and J. S. Waugh, Nuclear Relaxation in Gases: Mixtures of Methane and Oxygen (J. Chem. Phys.) C. S. Johnson, Jr. and J. S. Waugh, On the Mechanism of Nuclear Relaxation in Gaseous and Liquid CMF 1 (J. Chem. Phys.) B. Josephson, Jr. and M. W. P. Strandberg, The Effect of Color Centers on the Nuclear Spin-Lattice Relaxation Time in Lithium Fluoride (J. Phys. Chem. Solids) N. Y-S. Kiang, The Use of Computers in Studies of Auditory Neurophysiology (Trans. Amer. Acad. Opthalmol. Otolaryngol.) N. Y-S. Kiang, M. H. Goldstein, Jr., and W. T. Peake, Temporal Coding of Neural Responses to Acoustic Stimuli (Trans. IRE, PGIT) R. Melzack, The Perception of Pain (Sci. Am.) Carlota S. Smith, A Class of Complex Modifiers (Language) L. Stark and H. T. Hermann, (Nature) The Transfer Function of a Biological Photoreceptor K. N. Stevens and A. S. House, A Theory of Vowel Production and Some of Its Implications (J. Speech Hearing Res.) G. W. Stroke, Attainment of High-Resolution Gratings by Ruling under Interferometric Control (J. Opt. Soc. Amn.) J. A. Swets and Susan T. Sewall, Stimulus vs Response Uncertainty in Recognition (J. Acoust. Soc. Am.) LETTERS TO THE EDITOR ACCEPTED FOR PUBLICATION J. L. Hirshfield and S. C. Brown, Reply to Comments of J. D. Jukes (Phys. Fluids) W. K. Kahn and R. L. Kyhl, The Directional Coupler Core of an Arbitrary, Lossless, Reciprocal 4-Port (Proc. IRE) P. Penfield, Jr., Available Power from a Nonideal Thermal Source (J. Appl. Phys.) TECHNICAL REPORTS PUBLISHED (These and previously published technical reports, if available, may be obtained from the Document Room, 26-327, Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge 39, Massachusetts.) 362 D. H. Douglass, Jr. and M. W. P. Manganous Chloride Strandberg, Antiferromagnetic Resonance in TECHNICAL REPORTS PUBLISHED (continued) 375 M. Horstein, Sequential Transmission of Digital Information with Feedback 380 C. D. Geisler, Average Responses to Clicks in Man Recorded by Scalp Electrodes 382 M. 383 J. L. V. Pitteway, The Reflection of Radio Waves from an Irregular Ionosphere M. Wozencraft and M. Horstein, Coding for Two-Way Channels 384 R. R. Pffeiffer, Coded, Diversified, Rayleigh-Faded, Channels Bekefi and S. C. Binary Symmetric Threshold 387 G. Brown, Emission of Radio-Frequency Waves from Plasmas 392 H. H. Stroke, R. J. Blin-Stoyle, and V. Jaccarino, Configuration Mixing and the Effects of Distributed Nuclear Magnetization on Hyperfine Structure in Odd-A Nuclei SPECIAL PUBLICATIONS P. Chorney, Power and Energy Relations in Bidirectional Waveguides (Proc. Symposium on Electromagnetics and Fluid Dynamics of Gaseous Plasma, Polytechnic Press, New York, 1961) R. A. Howard, Discrete Dynamic Programming (Proc. Dynamic Programming Workshop, Denver, Colorado, June 1961) W. A. Rosenblith, Editor, Sensory Communication (Contributions to the Symposium on Principles of Sensory Communication, The M.I.T. Press, Cambridge, Mass., and John Wiley and Sons, Inc., New York, 1961). D. D. Rutstein, M. Eden, and M. P. Schiitzenberger, Report on Mathematics in Medical Sciences (New England Journal of Medicine, Vol. 265, pp. 172-176, July 1961). xvi