tldrdailynews.com logo
Tag

Optical Illusions

All articles tagged with #optical illusions

Butterflies Use Wing Patterns to Create Motion Illusions That Confuse Predators
science9 days ago

Butterflies Use Wing Patterns to Create Motion Illusions That Confuse Predators

New research published in Nature reveals that butterflies evade predators not through camouflage, but by creating motion illusions. Researchers from the University of Exeter and Essex found that wing patterns, combined with flight dynamics, scramble a predator's perception of speed and direction, similar to a barber pole effect. This 'motion dazzle' causes birds to miss their targets or strike non-vital areas. The study suggests this mechanism is widespread in nature and may explain why brightly colored butterflies survive despite being visible.

via The Guardian|
#entomology#evolutionary-biology#nature
"Mind-Bending Monday Challenge: Unraveling Illusions with Gizmodo"
puzzles2 years ago

"Mind-Bending Monday Challenge: Unraveling Illusions with Gizmodo"

Gizmodo presents a collection of optical illusions and puzzles, including the Neural Correlate Society's Best Illusion of the Year contest winner and a mirror demonstration. The article also features two mental illusions puzzles, one involving ants walking on a meter stick and the other involving a rectangle inscribed inside a quarter of a circle. The solution to last week's puzzle is also provided, explaining the concept of divisors and how perfect squares are the only doors that will be open at the end.

via Gizmodo|
#ants#divisors#mental-illusions
The Science Behind Optical Illusions: Debunking Brain Tricks
science-and-technology3 years ago

The Science Behind Optical Illusions: Debunking Brain Tricks

A new study by researchers from the University of Exeter and the University of Sussex suggests that certain optical illusions can be explained by limitations in our visual neurons rather than higher-level processing in the brain. The study found that our visual neurons have a finite bandwidth, which affects our perception of patterns on different scales. The researchers developed a computational model that shows how this limitation in processing and metabolic energy forces neurons to compress visual data, resulting in visual illusions. The findings challenge long-held assumptions about how visual illusions work and could help explain why we perceive contrasts in modern televisions with built-in HDR.

via ScienceAlert|
#color-processing#computational-model#neurons
Unveiling the Mind-Bending Mystery of Optical Illusions
science-and-technology3 years ago

Unveiling the Mind-Bending Mystery of Optical Illusions

Scientists have made progress in understanding the mind-bending secrets of optical illusions that deceive the brain into perceiving incorrect colors. These "simultaneous contrast illusions" manipulate our perception by altering the brightness or color of the background, tricking us into seeing different colors in the foreground. A new computer model called the "spatiochromatic bandwidth limited model" was used to mimic human vision and analyze over 50 illusions. The model consistently identified the wrong colors, suggesting that these illusions rely on basic-level neural processing rather than higher-order visual processing or past experiences. This supports the bottom-up hypothesis and confirms that illusions can be explained by a single layer of neurons.

via Livescience.com|
#brain-processing#computer-model#optical-illusions
science3 years ago

Scientists Unravel Mystery of Brain-Bending Optical Illusion

Scientists have discovered that the explanation behind the trickiness of simultaneous contrast illusions comes down to a limitation in our eyes, rather than an issue with our brain's processing power. Researchers used a computer model to mimic the limitations of our eyes and found that the model perceived the illusion the same way that humans do. This discovery challenges long-held assumptions about how visual illusions work and could lead to a better understanding of how colors are perceived in animals with different neuron bandwidths compared to humans.

via BGR|
#eyes#neuroscience#optical-illusions