The Ecological Approach to Visual Perception

By James J. Gibson | Go to book overview

SUBJECT INDEX
Accommodation, 148,217,251
Accretion of texture, 107-108
defined, 83
and head turning, 118-120
and minification, 103
in motion pictures, 293,297-300
and occluding edge experiments, 189-190
See also Deletion; Occlusion
Affordance, 127-143
concept introduced, 36
and ecological niches, 128-130
as a fact of the environment, 129
as invariant combination of variables, 134- 135,139-140
and nature of environment, 130
as opposed to experiences, 137-140
recent history of concept, 138-140
Affordances
of a cliff, 157-158
of enclosures (shelter), 29,37-38
of events, 102
during evolution, 18-19
of fire, 38
of ground for terrestrial locomotion, 16,36- 37,95,127-128,225-227
man-made, 129-130
misinformation for, 142-143
misperception of, 37,243-244
and niches, 128-129
of objects in general, 133-135
of other animals in general, 41-42,135-136
perception of, 133-135,140-143
positive and negative, 137-138
relativity of, 127-128
specification of, 140-142
of substances, 97-98,131-138
of surfaces, 131-132
of terrain, 36
of tools, 40-41
of water, 38,224
Ambient light
and accommodation, 217
defined, 16-19,65
and events, 102-111
homogeneous, 54
and illumination, 53-54
importance of, 203
information in, see Ambient optic array
and perception of surfaces, 23-26,29-30
vs. radiant light, 50-51,58-59 (fig.), 64
structuring of, 51-52,57-58,66-69,86-88, 102-103,148,168. See also Ambient optic array; Information, stimulus unstructured, 151,153
Ambient optic array
binocular disparity in, 114,120,148,159
binocular overlap in, 203-205
boundaries in, 203-207
and changing perspectives, 75-76,122,159, 182-184
contrasts in, 153-156
and ecological optics, 65-71
flow of, in a landing glide, 125 (fig.), 182
flow of, in locomotion, 123 (fig.), 124 (fig.), 227-229
importance of movement for, 72-76,79-84
vs. retinal image, 62
scintillation in, 108
sliding sample of, 118-119 (fig.), 309
structure of, 66,68,69 (fig.), 71 (fig.), 72 (fig.), 73-75,86-91,102-103,106,168
and successive sampling, 221-222,246-250
See also Ecological optics; Information, stimulus; Sampling, successive
Angles
intercept, 68-71
solid, 68-70,91,308
solid visual, 112,161-162,193,204,206- 207,212,270,297-298. See also Field of view

-322-

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