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Optical?Illusions & Visual Phenomena127 of them ? by Michael Bach (G+) |
… are fascinating! They also teach us about our visual perception, and its limitations. Emphasis here is on beauty, interactive experiments, and attempts at explanation of the visual mechanisms involved.
?Optical illusion? sounds pejorative, as if exposing a malfunction of the visual system. Rather, I view these phenomena as highlighting particular good adaptations of our visual system to experience with standard viewing situations. These experiences are based on normal visual experiences, and thus under unusual contexts can lead to inappropriate interpretations of a visual scene (=Bayesian interpretation of perception).
If you are not a vision scientist, you might find my explanatory attempts too highbrow. That is not on purpose, but vision research is not trivial, like any science. So, if the explanation seems gibberish, simply enjoy the phenomenon ;?). More: Bach & Poloschek (2006) Optical Illusions Primer; on the programming: Bach (2014, PDF).
No. The web is full of claims that your personality (right- or left brain dominated, intro- vs. extroverted, or whatever) can be deduced from your ability to see some certain illusion or not. However, I know of no reliable scientific data that suggests this. That's just click-baiting BS. There is some influence of age, though ?? but you don't need illusions to know your age… So: Don’t let it irk you if you don’t see all the phenomena described. For many illusions, there is a percentage of people with perfectly normal vision who just don’t see it, mostly for reasons currently unknown.
Before we delve in, I’d like to express my thanks for your @feedback; any advice is appreciated.
| 4 demonstrations require the free Macromedia’s/Adobe’s Flash player . |
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