INDEX 



121 



Intensity, 92 



of sound, 63 



of stimuli, 61 



of stimulus, 39, 40, 55, 84 

 Intensity-discrimination, 69, 70 

 Interaction of perceptions, 14 

 Interaction of transmitted impulse, 14 

 Interconnected chains, 56, 74 

 Interconnecting neurons, 105 



inhibitory, 57 

 Interdependence of perceptions, 13 

 Intermediate neurons, 12 

 Intermittent stimulation, 45, 46 

 Internuncial neuron, 30 

 Internuncial neurons, 108 

 Interocular distance, 101 

 Intra-neuronal dynamics, 3 



Johnson, V., 90 



Judgment, categorical, 58, 60 



Judgments 



aesthetic, 74 



"correct", 72 



"doubtful", 59, 60 



"greater than", 59, 61 



"less than", 59 



of brightness, 60 



of "equality", 59, 61 



of "greater", 61 



of "less", 61 



of loudness, 63 



"wrong", 72 



Kellogg, W. N., 60, 62, 63 

 Kinaesthesis, 95 

 Konig, A., 68 

 Kubie, L. S., 22 



Landahl, H. D., 8, 16, 18, 22, 26, 52, 

 54, 57, 61, 62, 64, 83, 85, 86, 

 88, 89, 97, 103, 111, 115 



Lashley, K. S., 84 



Latent addition, period of, 111, 113 



Law of Plurality of Connections, 30 



Law of Reciprocity of Connections, 30 



Learning, 79, 85, 88 



Length, discrimination of, 70, 71 



"Less", judgments of, 61 



"Less than" judgments, 59 



Lettvin, J. Y., 115 



Lifted weights, 72 



discrimination of, 73 



Light-dark ratio, 45 



Lorente de No, R., 22, 30 



Loudness, judgments of, 63 



McCulloch, W. S., viii, 2, 103, 104, 107, 



108, 109, 111 

 MacDonald, P. A., 70 

 Macroscopic picture, 103 

 Magnification-increment, 101 

 Matthews, B. H. C, 3, 49, 50 

 Maximal activity, 11 

 Mean value of threshold, 54 



Measure of region, 20 

 Mechanism, 32, 37, 49, 56, 64, 72, 76, 

 86 



discriminating, 91 



neural, 13, 90, 92 

 Medial plane, 100 

 Memory, 79 



Microscopic picture, 103 

 Mixed neuron, 26 

 Mode of presentation, 62 

 Model, viii, 1 



idealized, vii 

 Modulating effects, 22 

 Monocular vision, 94 

 Movement, eye, 71 

 Movements, spontaneous, 22 

 Muller's law of specificity, 90 

 Muscles, 1 



Muscular contraction, 4 

 Muscular stretch, adaptation to, 50 

 Multidimensional psychophysical 

 analysis, 74, 76 



Near-threshold stimulation, 65 

 Negation, 105 

 Nerve-impulse, 104 

 Nervous activity, vii 

 Nervous discharge, 104 

 Nervous impulse, vii, 2, 31 

 Net, 30, 66, 83, 86, 105, 107 



cyclic, 109 



existential, 110 



non-cyclic, 107, 109 



order of, 109 



steady-state of, 36 



symmetrical, 57 

 Nets 



neural, 95, 113 



boolean algebra of, 103 

 Neural chains, 13 

 Neural circuits, 79 

 Neural complex, viii 

 Neural disjunction, 95 

 Neural mechanism, 13, 90, 92 

 Neural net, general, 30 

 Neural nets, 95, 113 



boolean algebra of, 103 

 Neural pathway, 4 

 Neural pathways, segregation of, 90 

 Neural structures, vii, 7, 37 

 Neuron, 5, 22, 25, 33, 41, 49, 53, 54, 

 61, 62, 107 



asymptotically exciting, 5 



asymptotically inhibiting, 5, 6, 9 



effects of ions on excitability of, 

 53 



excitatory, 17, 19, 28 



firing of afferent, 109 



inhibitory, 17, 19, 28 

 single, 24 



internuncial, 30 



minimal region of, 53 



mixed, 26 



self-stimulating, 22, 26 



