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8901 |
duddy |
10 years ago |
Are women better than men at sensing emotions?
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A new psychology study suggests that women are better than men at reading people's thoughts and emotions, just by looking at the eyes. Researchers from around the globe tested the way genes influence a person's cognitive empathy; their ability to accurately recognise another person's emotional state. 90,000 people were shown different photographs of people's eyes and asked to determine their mood. Results showed that women more consistently picked the correct feeling when the participants had to select what emotion they perceived when shown a visual of a person's eyes. This is the first big study on cognitive empathy and its relationship to gender. The international research team has also identified a potential genetic region that influences ...
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6251 |
bio_man |
6 years ago |
This blind bird's eyes look like miniature galaxies
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This is Zeus, a blind Western Screech Owl whose eyes look like forming galaxies. The stellar effect is likely caused by chunky vitreous strands in his eyes. The handsome owl was found injured in Southern California and now lives at the Wildlife Learning Centre in Los Angeles.
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6004 |
duddy |
9 years ago |
The Ozark cavefish has no eyes
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The Ozark cavefish ( Amblyopsis rosae) is a small subterranean freshwater fish native to the United States. The fish has no pelvic fin; the dorsal and anal fins are farther back than on most fish. It has only rudimentary eyes and no optic nerve.
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4738 |
duddy |
8 years ago |
Medical science at its best
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This is what an eye looks like after keratoprosthesis: a surgical procedure where a diseased cornea is replaced with an artificial cornea.
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4595 |
duddy |
8 years ago |
Fluke surgery restores this lady's eyesight after 21 years of blindness
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Mary Ann Franco, now 70 years old, lost here eyesight in 1995 when a car accident damaged her spine. More than two decades after the initial injury, she fell in her home and injured her neck, sending her to the hospital once again to seek treatment for pain in her arm and back. After doctors decided to perform surgery on her back to alleviate her pain, they happened to cure her blindness. It is suspected that her first injury caused a lack of blood flow to the brain that controls eyesight, and this operation restored it. Interestingly, Franco has been colour blind since birth, but the operation seems to have fixed that problem, too. The spinal cords running down our spines carry a bundle of nerve tissue and other cells from the base of the b ...
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4281 |
duddy |
7 years ago |
This trick will make your brain see a black-and-white image in color
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Watch the video above, the trick is nothing short of incredible! This is due to a mechanism called the opponent-process theory, which was developed in the 1870s. It is the idea of perceiving color in terms of paired opposites such as red with green, and yellow with blue. The possible scientific explanation for this theory is that bipolar cells are excited by one set of wavelengths and inhibited by other, which are in extend attached to the cone retinal receptors.
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3681 |
duddy |
8 years ago |
How many colours do you see?
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You see those embedded spirals of green, pink and blue? The green and blue spirals are actually the exact same colour. When the green and pink colours are placed side-by-side, they enhance each other’s darker tones, making them look like completely new colours. How we perceive colours is dependant on the light and shadow surrounding them and on the placing of contrasting colours side by side.
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3638 |
duddy |
9 years ago |
How do you stitch an eyeball?
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This is what eyeball stitches look like after a cornea transplant. Beautiful and terrifying all at once.
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3541 |
duddy |
9 years ago |