Subject Index 



409 



Information processing 



essential subsystems, 302 



in computers, 31, 32, 33 



in human brain, 240, 301 



in time domain, 329-348 



models of, 35, 38, 41 , 54, 230, 236, 239 



subsystems research, 306 

 Information storage, 8-10 



fixation of experience, 363, 366 



in nerve cells, 189 



long-term, 244, 369 



mechanisins, 192 



short-term, 195-197, 210, 211 

 Information theory, 5, 240, 295 



in ecology, 140-149 



in neurophysiology, 230-239 

 Inhibition, 235, 268, 284, 341, 360, 381, 



388 

 Inputs, 53, 235, 287, 293, 302-308, 311, 



314, 325, 365 

 Interaction 



group, 341, 343 



of afferents, 285, 296 



virus and cell, 129 

 Interference, 18, 22, 244 



Language, 38, 303, 305, 362, 383 



coding, 43-48 



information in, 20 



redundancy of, 26 



statistical properties of, 42 

 Learning, 173, 181, 283, 303, 310, 357, 

 366, 381, 389 



levels of, 174, 177, 183, 185, 190, 355, 

 359 



process of, 177, 181 , 232, 354, 359, 371 



theory of, 56, 173, 301, 310 

 Logic 



of propositions, 379, 381, 397 



probabilistic, 55, 284, 293 



M 



Machine, computing, see Computers 

 Machine, Turing, 36, 284, 377, 395 

 Malleability, of processing system, 355, 

 360, 362 



Memory, 37, 52, 225, 243, 255, 280, 

 304, 310, 359, 363, 374 



cellular, 201, 212 



enduring, 189, 365 



functional, 201 



recent, 189 



retention of, 189 

 Message, 12, 15, 19, 25, 301-305 



{see also Binary units) 

 Messenger, see RNA 

 Metacommunications, 186, 354 

 Metalanguage, 186 



Models, information processing, see In- 

 formation processing 

 Mutations, 61, 74, 80 



chemically induced, 81 



externally adaptive, 372 



genetic, 63, 363 



suppressor, 72 



N 



Natural selection, 167, 373 

 Nets, see Neuron nets 

 Neuron nets 



anastomotic, 283-295 



logically stable, 287 



with circles, 390 



without circles, 382 

 Neurons 



input. 290, 294 



internuncial, 380 



logical functions of, 286 



output, 284, 292, 297 



spontaneously active, 236, 390 



storage, 235 



threshold of, 289, 314, 381 

 Noise, 13, 18, 21, 22, 171, 283, 289, 296, 

 305, 330, 375 



errors induced by, 26, 142 



fluctuation in, 309 



high frequency, 340 



random, 12, 18, 22 

 Nucleotides 



composition, 94, 95 



sequence, 83, 101 



triplets, 82, 97, 114 

 Numbers, binary, 27, 29, 30 



