INDEX 



Equilibrium, unstable. 44 

 Equivalence relation, 242 

 Error-control, 55 

 Essential variables, 42 

 Even v. Odd, 232 

 Exponential function, 150 

 External composition, 242 

 Eye muscles, 104 



Failure, 118 



Falcon, 201 



Feedback, 37, 228 



Feedback, second-order, 83 



Fencing, 67 



Field, 23 



Field, stable, 49 



Fire, 12 



Fraunhofer lines, 124 



Full-function, 87 



Function, full-, 87 



Function, null-, 87 



Function, part-, 87 



Function, step-, 87 



Fuse, 88 



Gating mechanism, 144, 216 

 Gene-pattern, 8, 134 

 Gestalt, 156 

 Girden, E., 74 

 Goal-seeking, 54, 81, 131 

 Governor, 44, 48, 50 

 Grant, W. T., 68 

 Grindley, G. C, 112 

 Group, 244 



Habituation, 185 

 Harrison, R. G., 125 

 Hertz, Heinrich, 52, 85 

 Hilgard, E. R., 113, 216 

 Holmes, S. J., 66 

 Homeostasis, 58 

 Homeostat, 100, 246 

 4 Homeostatic ', 100 

 Humphrey, G., 189 

 Hunter, 120 

 Hurvvitz, A., 256 



/. to C, vii 



Immediate effects, 51, 278 

 Impulsive stimulus, 76 

 Inactive, 170 

 Independence, 159, 278 

 Index of equilibria, 175 

 Initial state, 20 

 Instrumental learning, 113 

 Insulation, 165 

 Intelligence test, 121 

 Interference, 216 

 Introduction to Cybernetics, vii 

 Invariant, 242 



Isolation, 35, 165 

 Iterated systems, 197 



Jennings, H. S., 38, 189, 193 

 Joining, 76, 266 



Kitten, 12, 62, 80 

 Kletsky, E. J., 100 

 Knowledge, borrowed, 19 



Laplace, 28 

 Lashley, K. S., 182 

 Latent roots, 255 

 Learned behaviour, 2 

 Learning, 11, 234 

 Learning, instrumental, 113 

 Levi, G., 125 

 Line of behaviour, 20, 243 

 Linear system, 246 

 Localisation, 124, 181 

 Loeb, J., 126 

 Logic of mechanism, 241 

 Lorente de N6, R., 124 



McCulloch, W. S., 125 

 McDougall, W., 65 

 Machine, 13 



Machine with input, 25 

 Main variables, 93, 265 

 Mapping, 242, 263 

 Marina, A., 104 

 Marquis, D. G., 113, 216 

 Maze-running, 3 

 Memory, 10 

 Microscope, 3 

 Micturition, 92 

 Miniaturisation, 127 

 Monitoring, 220 

 Morgan, C. Lloyd, 39, 201 

 Motor end-plate, 125 

 Mowrer, O. H., 108 

 Miiller, G. E., 216 

 Multistage system, 209 



Natural selection, 8, 134 



Natural system, 25 



Neuron, 4 



Neutral equilibrium, 44 



Nie, L. W., 119 



Noise, 270 



Normal stability, 253 



Null-function, 87, 264 



Number of parts, 148 



Nyquist, H., 256 



Objectivity, 9 

 Observation, 17 

 Odd v. Even, 232 

 Operation, primary, 18 

 Operational method, 9, 17 



284 



