Optical illusions happen when visually perceived images are different from objective reality. As a result, we can not always trust what we see. This may sounds scary, but this world is full of things that are not always the way they appear, isn’t it?
Although our mind can make sense of the world around us most of the time, it sometimes gets out of control. These optical illusions are some examples. They are nothing magical, but what in your brain. In these images, color, light, or pattern can be deceptive or misleading. When our brain process the information, the perception does not match with the reality. Can we say that our brain sucks in this case?
Try some of these illusions and see how tricky they are. They are not really tricky, but fascinating. They are a great way to show us about our visual perception and its limitations. There are many types or ways to cause visual illusions.
Some typical causes for visual illusions
- Motion and time
- Luminance and contrast
- Geometric and angles
- Cognitive and gestalt effects
- Space, 3D and size constancy
- Auditory illusions
- Specialties with faces
Warning: Some images and videos in this post contains some stimuli and should not be viewed by those known to suffer from epilepsy or similar conditions.
# 1 Rotating Rings
If you stare at the dot in the center and move your head away from the screen, the rings will start to rotate. Now gradually get closer again, they change direction!
# 2 What Do You See?
BBC conducted a TV experiment way back in 1983 with 2 million viewers to test if the knowledge of other people can influence your own. So what do you see in the image?
# 4 Hermann Grid
Ludimar Hermann discovered this optical illusion in 1870. At every white line intersection, our eyes perceive a gray, shadowy blob. However, if you look directly at one of the intersections though, the blob disappears.
# 5 Stepping Feet Motion Illusion
Most people see the boxes moving in little steps but in reality they are moving simultaneously.