Zoellner illusion
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Zoellner illusion
Zoellner illusion. The vertical lines are parallel but seem to be tilted. There are 2 theories as to why this is the case. The first is that the small crossing lines create a perception of depth and our brains interpretation of perspective leads to the illusion. The second is that the effect is a result of our visual systems propensity to try to minimise acute angles - applied to the small crossing lines
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6439947
© SCIENCE PHOTO LIBRARY
Illusory Neuroscience Optical Illusion Parallel Perspective Psychology Trick Vision Visual
EDITORS COMMENTS
This print showcases the intriguing Zoellner illusion, a visual phenomenon that never fails to captivate our minds. At first glance, the vertical lines appear to be tilted, defying logic and challenging our perception of reality. However, in truth, these lines are perfectly parallel. Scientists have put forth two fascinating theories to explain this mind-bending illusion. The first theory suggests that the small crossing lines within the image create an impression of depth. Our brains instinctively interpret perspective based on this perceived depth, leading us astray and causing the illusionary tilt effect. The second theory delves into our visual system's innate tendency to minimize acute angles. It posits that when we encounter these small crossing lines within the image, our brain subconsciously attempts to reduce any sharp or acute angles present. This inclination further contributes to distorting our perception and intensifying the illusory tilt. As we delve into this optical enigma, it becomes evident how intricately connected trickery of vision is with psychology and neuroscience. Exploring such illusions not only unveils hidden aspects of human cognition but also highlights how easily our senses can be deceived by seemingly simple patterns. This remarkable print serves as a reminder of both the complexity and fragility of human perception while offering a glimpse into one facet of its mysterious workings - an illusory world where parallelism bends and acute angles vanish before our very eyes.
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