INDEX 



Absolute discrimination, 66, 72 

 Absolute thresholds, 65 

 Accessibility, 10, 11, 12 

 Accessible, 10, 31 

 Accommodation, 48, 97, 98 

 Action-spikes, 103 

 Activity 



continuous, 26 



maximal, 11 



nervous, vii 



permanent, 22, 29 



steady-state, 7, 67, 81 

 Activity parameters, 17, 19 

 Adaptation, 42, 72 



to muscular stretch, 50 

 Aesthetic judgments, 74 

 Afferent chains, 74 

 Afferent neuron, firing of, 104 

 All-or-none character, 103 

 Amelotti, E., 115 

 Analysis 



factor, 75 



multidimensional psychophysical, 

 74,76 

 Anatomy, vii 

 Anomalous fusion, 99 

 Apparent depth, 96 

 Apparent size, 96, 97 

 Applied stimulation, 11 

 Applied stimulus, 9 

 Asymptotic value, 7, 25 

 Asymptotically exciting neuron, 5 

 Asymptotically inhibiting neuron, 5, 



6, 9 

 Auditory data, 62, 69 

 Auditory sensations, 68, 69, 70 

 Auditory stimuli, 40 

 Awareness of stimuli, 16 



Bartley, S. H., 45, 48 



Behavior, vii, 1 



Berger, G. O., 39, 55 



Bichowsky, F. R., 98 



Binocular cue, 71, 97 



Binocular disparity, 98 



Binocular stereopsis, 97 



Binocular vision, 97 



Binocular visual field, 98 



Blind alley, 85 



Boolean algebra of neural nets, 103 



statistical interpretation of, 111 

 Brightness 



constant, 45 



judgment of, 6 



relative, 48 

 Brock, F. W., 99 

 Brodhum, E., 68 



Carlson, A. J., 90 



Categorical judgment, 58, 60 

 Cattell, J. McK., 39, 55 

 Centers, inaccessibility of, 12 

 Chain of neurons, 8, 9, 11, 12, 22, 31, 



35 

 Chain of two neurons, 38, 41, 46 

 Chains, afferent, 74 

 Chains, interconnected, 56, 74 

 Chains of neurons, 7 

 Chains, two-neuron, 79 

 Chodin, A., 71 

 Circuit, 24, 28, 31, 81 



two-neuron, 25 

 Circuits, 66, 78, 79, 83 



self -exciting, 12 



simple, 22 

 Color-center, 91, 92 

 Color-contrast, 13 

 Color-perception, 21 

 Color-pyramid, 92 

 Color-vision, theory of, 90 

 Colors, 92 



discrimination of, 72, 91 

 Common synapse, 49 

 Common terminus, 13 

 Complete inhibition, 104 

 Complex stimulus-object, 74 

 Conditioned stimuli, 83 

 Conditioned stimulus, 81 

 Conditioning, 79, 81 

 Conduction time, 22, 31, 33, 104 

 Conjunction, 105 

 Connections, excitatory, 105 

 Constancy of perceived size, 97 

 Constant brightness, 45 

 Constant stimulus, 42, 48, 49, 54 

 Continuous activity, 26 

 Contraction, muscular, 1, 4 

 Convergence, 97, 98 

 Coombs, C. H., 115 

 "Correct" judgments, 72 

 Correct response, 58, 61, 83, 87 



probability of, 58, 59, 89 

 Corresponding points, 98 

 Cortical image, 97 

 Critical flicker-frequency, 45, 46 

 Critical frequency, 44, 46 

 Critical value, 8 

 Crossing excitation, 65, 78 

 Crossing inhibition, 65, 74, 76, 78 

 Cutaneous receptors, 64 

 Cycles, 107 

 Cyclic net, 109 

 Cylindrical size-lens, 100, 102 



Delay of reaction, 39, 40 

 Depth, apparent, 96 

 Discharge, nervous, 104 

 Discriminal response, 75 



119 



