SUBJECT INDEX 



Consecutive passages extending over more than one page are indexed by the first page only. 



AA gun computer, 401 



Acceleration, 375, 399, 404, 406, 408, 410, 411 

 angular, 375, 400, 403, 407 

 linear, 375, 400, 403 

 periodic, 381 

 radial, 408 

 translational, 405 

 vertical, 406, 409 

 wave form, 409 

 Action potentials 



sensory nerves, 391 

 Acuity 

 auditory, 351, 352 



differences between two ears, 212 

 visual, 25 



chromatic contrast, 35 



chromatic illumination, 35 



duration of inspection, 29 



interrelationships, 31 



luminence, 28 



luminence contrast, 30 



luminence of surround, 31 



moving objects, 38 



near and far objects, 26 



night, 29 



retinal location, 27 



scotopic, 24 



size of surround, 35 



Snellen ratings, 25 



visual angle, 26, 28 

 Adaptation, 288, 345, 352, 377, 378, 379, 381, 384, 



392, 404, 406, 435 

 auditory 



noise, 345, 352 

 thermal, 288 



effect of combined factors, 288 

 visual 



dark, 77, 348, 352 

 Amphibious tactics, 412 

 Ampulla (See Ear, inner) 

 Annoyance 



subjective, 349, 351, 352 

 Apprehension span (See Communication system) 

 Audibility 

 words 



competitive context, 239 



related to complexity, 239 

 in noise 



differences among words, 237 



factors governing, 238 

 test 



in selecting standard phraseology, 240 



Audiograms, 346, 347, 351 

 Audition 

 advantages of basic research, 208 

 auditory signals, 201 

 differences in acuity of two ears, 212 

 display, auditory, 201 

 localization of sound, 212 

 binaural, 208 



dynamic vs. static cues, 213 

 interaural cues 

 effect of combining cues, 213 

 intensity, 206, 212 

 phase, 206, 212, 213 

 time, 212 

 simulated, 212 

 as an illusion, 214 

 physiology, 223 



relation of stimulus characteristics to psy- 

 chological characteristics, 211, 213 

 research 

 tonal stimuli, 222 

 white noise, 222 

 methods, 221 



physio-physical, 222, 223 

 psycho -physical, 221 

 psycho-physiological, 222, 223 

 Auditory 

 communication (See Communication) 

 display (See Audition) 

 fatigue, 226, 349, 351 

 perception 



need for theory, 247 

 signals 



basic requirements, 207 

 in aircraft, 203 



advantages, 206 

 non-speech 

 continuous, 203, 208 

 Flybar, 205 

 Radio range, 204 

 occasional, 203 

 psychological problems, 208 

 standard signal, 206, 207, 208 

 speech, 203 

 trauma, 351, 352 



Basal metabolism, 273 

 Blood pressure, 347 

 Bodily sway, 348 

 Bombardiers, 352 

 Brain activity 



in motion sickness, 391 



531 



