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INDEX 



thalamo-telencephalic pathways, 173, 



209 

 threshold 



acoustic, 395, 399, 401, 405 



chemical, 244-250 



electrical, 501, 509, 516, 520 



mechanical, 333, 357 



visual, 28, 31, 68-69, 72, 77-79,82, 84 

 Tongue of the Ocean, Bahamas, 405-407 

 Torpedo, 120 



canal system, 349 



evoked potential studies, 232 



hair cells, 340, 343 



histological alterations, 628 



olfaction — food procurement, 284 



Poloumordwinoff ending, 335 



telencephalon, 209, 283 



skin receptors, 358 

 transmitters 



absorption, 456-457 



application, 446-452 



batteries, 465-467 



fixed-receiver arrays, 449-450 



hydrophones, 447-450, 461-462 



recovery, 446-452 



spreading, 455 



tracking, 446-452 

 transmitter characteristics 



absolute sensitivity, 461 



bandwidth, 461-462 



frequency, 459 



output power, 459-460 



pulses, 460, 461 



scattering, 456 



signal-detection, 463-465 



transducer size, 465 



ultrasonic propagation in seawater, 455 

 transmitter construction, 434-446 



air filling, 439 



circuits, 434-435 



discrete wiring, 435 



integrated circuits, 434 



microminiaturization, 437 



monolithic integration, 437 



oil filling, 438-439 



packaging, 437, 440 



potting, 437-438 



size and density, 437 



thick-film hybridization, 435-436 



thin-film hybridization, 436 

 Triaenodon 



feeding behavior, 288 



olfactory responses, 288 



sound attraction, 394, 403, 599 

 Triakis, 14, 28, 53 



bioelectric behavior, 512 



geomagnetic tests, 520-521 



histological alterations, 629 



telencephalon, 180 



trimethylamine, 21, 38, 248, 252 

 Triton, 285, 289, 301 

 tubocurarine, 234 



ultrasonic techniques 



multiplexing, 428 



timefix, 431-434 



transponding, 429-431, 449 

 ultrasonic transmitters, 424-434 



acoustic-command function, 428-431 



clock-timed function, 431-434 



data storage, 434 



multichannel, 428, 453, 470 



pinger, 425-426 



single channel, 427-428 

 University of Utrecht, Netherlands, 509 

 University of Virginia, 196 

 urea, 21, 38 

 uric acid, 27 

 Urolophus, 49, 56 



bioelectric behavior, 512 



ERG, 68 



feeding behavior, 522 



flicker, 76 



geomagnetic tests, 522-524 



orientation, 525-526 



Purkinje shift, 77 



retina, 49, 56 



spectral sensitivity, 77 



Verier, M.L., 12, 108-109 

 vibrational sensitivity, 357 

 viceral sensory nuclei, 155 

 visual evoked potential, 209-211 

 visual pigments, 64-66 



whitetip shark (see Triaenodon) 

 Wunderer corpuscle, 333-335 

 Woods Hole Oceanographic Institution, 

 260, 523 



xanthine, 27 



Yap Islands, 597 



Zambesi River system, 556 

 Zambesi shark (see Carcharhinus) 



it U.S. GOVERNMENT PRINTING OFFICE : 1978 O— 268-166 



