APPARENT BRIGHTNESS AND PERCEPTUAL PHENOMENA-2 : Apparent Contrast and Visual Acuity
نویسندگان
چکیده
منابع مشابه
Articulation: brightness, apparent illumination, and contrast ratios.
Luminance edges in the environment can be due to regions that differ in reflectance or in illumination. In three experiments, we varied the spatial organization of 10 achromatic (simulated) surfaces so that some arrangements were consistent with an ecologically valid and parsimonious interpretation of 5 surfaces under two different illuminants. A constant contrast-ratio along a luminance edge i...
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The problems of brightness constancy (e.g., the constancy of perceived object color under different illumination conditions), and of the perceptual constancies in general, arise from the fact that changed sensory stimuli frequently elicit unchanged responses (and vice versa) which follow more closely the variations of distal stimuli (objects) than of the sensory-surface stimulus distributions. ...
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Perceptual organization and selective attention are two crucial processes that influence how we perceive visual information. The former structures complex visual inputs into coherent units, whereas the later selects relevant information. Attention and perceptual organization can modulate each other, affecting visual processing and performance in various tasks and conditions. Here, we tested whe...
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Stuart Anstis Frisby and Stone (2010) have dubbed adaptation the “psychophysicist’s electrode,” and John Mollon once (1974) famously said, “If it adapts, it’s there.” Psychologists piously hope that their many experiments on visual adaptation will tell physiologists where to look inside the brain. This chapter describes visual adaptation to temporal ramps, spatial edges, and apparent motion (AM...
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Four dots in an imaginary diamond were flashed in succession to give ambiguous apparent motion (AM). The top and bottom dots were flashed at time t, and replaced by the left and right dots at time t,. If two priming dots were gashed beforehand at time r0 in line with two parallel sides of the diamond, AM was seen along those sides. We call this “visual inertia”. The amount of visual inertia (me...
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ژورنال
عنوان ژورنال: Transactions of the Architectural Institute of Japan
سال: 1974
ISSN: 0387-1185,2433-0027
DOI: 10.3130/aijsaxx.216.0_11