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The science of "Snake-O-Vision"

If you've seen the serpentastic film Snakes on Plane Buy caduet online without prescription, , you're familiar with the movie's superb use of "Snake-O-Vision" -- the many moments when the camera shows a snake's-eye view of an impending attack. Caduet non prescription, According to the movie, the snakes "see" their prey in green night-vision, order caduet without prescription, Caduet bangkok, with a round pinhole-camera-like center that's in focus, and a periphery that's blurry, caduet rx. Canadian caduet, Like everyone else in the movie theater, I laughed my head off when I saw it.

But then I wondered: How scientifically accurate is Snake-O-Vision?

As it turns out, caduet in uk, Buy caduet generic, the question of Snake-O-Vision has long puzzled scientists, particularly in two types of deadly serpents -- pit vipers and boid snakes, best price caduet. Discount caduet without prescription, These snakes can strike prey with accuracy even when they're blindfolded, which suggests they're using a "pit organ" on each side of their head that senses infrared radiation, cheapest generic caduet. Cheap caduet in usa, The problem is that these pit organs are one millimeter in size and not very deep -- which means they could produce only extremely blurry images. So how do the snakes do it?

A trio of German scientists now theorize that the snakes use firmware in their brains to error-correct the lousy imagery by harnessing the infrared noise produced by a moving prey, buy caduet online without prescription. They built a neural-net model in a computer that mimics this, caduet from canada, Discount caduet overnight delivery, and fed it the actual data produced by a pit organ's 2000-odd receptors. Presto: It refined the blurry images into startlingly precise results, cheap caduet in uk. Buy cheap caduet, Check out the example above: There's the actual bunny, the blurry image from the pit organ (top right), lowest price for caduet, Caduet india, and the result generated by their neural net (bottom right).

Okay, but how do we know this theoretical model matches what's actually going on inside the snakes' brains, buy caduet on internet. Order caduet in us, We don't -- but the theory makes one superb prediction. It's this: If the pit organ generates even tiny errors, cheap caduet, Buy cheap caduet online, it would ruin the image. To minimize the errors in the scientist's model, find caduet online, Cheap caduet in canada, the pit membrane would have to be no more than 15 microns thick -- one fifth the thickness of a sheet of paper. And that is precisely the thickness found in a real snake.

As one of the scientists, cheapest caduet prices, Real caduet without prescription, Leo van Hemmen, told The New Scientist:

"We've found a simple way that something seemingly impossible could work in the snake, caduet cheap, Cheap caduet from canada, " he says. "If we could work it out, caduet approved, Cheap caduet from uk, we're sure that nature could too."

A paper on the experiment was published this month in Physical Review Letters, but it is, buy discount caduet, Caduet pill, alas, behind a paywall.

(Via collision detection.)

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