optical illusion Archives - Dr. KarenTurnerPhD

How Normal is your Brain???

Karen Turner — Tue, 05 Sep 2023 11:00:05 +0000

If your brain works normally this is neat.

This is another example of an amazing illusion!!! The last sentence is so true.

If your eyes follow the movement of the rotating pink dot, the dots will remain only one color, pink.

However if you stare at the black ” + ” in the center, the moving dot turns to green.

Now, concentrate on the black ” + ” in the center of the picture. After a short period, all the pink dots will slowly disappear, and you will only see only a single green dot rotating.

It’s amazing how our brain works. There really is no green dot, and the pink ones really don’t disappear. This should be proof enough; we don’t always see what we think we see.

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Online Optical Illusion: Café Wall Illusion

Karen Turner — Sat, 02 Sep 2023 18:07:56 +0000

Café Wall Illusion is a classical online optical illusion; reported in 1979 by Professor Richard L. Gregory and Priscilla Heard of The University of Bristol, England. They derived this pattern from a pile of white and black ceramic tiles on the front wall of a café at St Michael’s Hill, Bristol. Later, this pattern became a very popular online optical illusion. This online optical illusion is another example of the limitations in the human optical system, leading the brain to form deceptive impressions.

In this optical illusion, your see rows of alternate black and white blocks with gray borders. What do you perceive about the horizontal lines in this online optical illusion

Explanation of Café Wall online optical illusion

There are various explanations for the Café Wall online optical illusion. Psychological articles give a neuropsychological explanation suggesting that this online optical illusion results from limitations in the balancing act of the inhibitory and excitatory neurons in the brain. Psychological articles inform us that inhibitory neurons dim down perceived bright areas while excitatory neurons brighten perceived dark areas. Hence, in this online optical illusion, the areas in which white is prominent, become dimmed, and the areas surrounded by dark areas are brightened.

Moreover, the limitation in the reaction between the two neurons projects slopes on the straight line. The slopes are in opposite directions according to the dimmed and brightened areas. Hence, you see the straight lines in this online optical illusion to be wavy.

The Café Wall online optical illusion works on the principle of contrast. Along with numerous other online optical illusions explained in Boomer Yearbook that also result from the effect of contrast on the perception of the visual stimulus.

This Psychological Article on Online Optical Illusions is part of Boomer Yearbook’s continuing series of out of the box suggestions on how to alleviate elderly problems and keep our brains young. We believe knowledge is power. We’d love to hear what you think.

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Online Optical Illusion: Experience and Perception

Karen Turner — Sat, 02 Sep 2023 17:21:11 +0000

To a very great extent, our visual sense is not “objective” in that there is not a perfect one to one ratio between what we see and how we make sense of what we see. In fact, oftentimes our brain interprets what our eyes perceive based not solely on the visual stimuli we are looking at but on our cognitions and experiences.
(http://boomeryearbook.com/blog/2009/03/15/psychological-article-types-of-online-optical-illusions/)
Many online optical illusions capitalize on this common miscommunication between our eyes and our brains, and use it to create online optical illusions; especially of the Cognitive type. Thus, when looking at an online optical illusion, the human brain takes in the visual stimuli and then connects it to past cognitions and experiences, matching the stimuli to our cultural and experiential “Gestalt”, In other words, perceiving the online optical illusion in the context of what is familiar and previously stored in our brains as meaningfully recognizable.
One of the classical online optical illusions that illustrates this example is the “Message of Love from the Dolphins” by Swiss artist Sandro Del-Prete.
Hmmm. What do you see? Well, before jumping to judgmental conclusions about this online optical illusion, it’s important to know that psychological articles inform us that adults see something very different than does the typical child.
If you are an adult, you will probably see two individuals in an intimate position in this online optical illusion. That is all right. Most adults will see the same. It is because you have prior knowledge of what lovemaking is. However, I have to disappoint you. In fact, this image is not of two individuals in an intimate position.
Psychological articles advise us to perform this little experiment. Ask some small children with no knowledge of lovemaking to tell you what they see in this online optical illusion. Will they perceive the image as adults do? Psychological articles tell us the answer is no. In fact, they see nine dolphins in a bottle on this online optical illusion. You may be surprised but it is true. Take another good look to this online optical illusion to find the nine dolphins.
Have you found the nine dolphins in this online optical illusion? If not, let me suggest that you concentrate on the black spots within the picture that you perceived to be human figures.
When you look at this online optical illusion, you perceived the image in connection with your prior knowledge that is within your realm of familiar experiences.
However, for a kid, this online optical illusion is just a school of dolphins in a bottle because they do not have any knowledge about the intimate position.

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