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Some neurons appear to be tuned to detect movement in one direction. It has been found that the snake's visual and infrared maps of the world are overlaid in the optic tectum. This combined information is relayed via the tectum to the forebrain. [9] The nerve fibers in the pit organ are constantly firing at a very low rate.
The snake detection theory, [1] [2] [3] also sometimes called the snake detection hypothesis, suggests that snakes have contributed to the evolution of primates' visual system. According to the theory, predatory pressure from snakes has selected individuals who are better able to recognize them, improving their survival chances and therefore ...
A new snake species, the northern green anaconda, sits on a riverbank in the Amazon's Orinoco basin. “The size of these magnificent creatures was incredible," Fry said in a news release earlier ...
Illusion similar to Rotating Snakes. Rotating snakes is an optical illusion developed by Professor Akiyoshi Kitaoka in 2003. [1] A type of peripheral drift illusion, the "snakes" consist of several bands of color which resemble coiled serpents. Although the image is static, the snakes appear to be moving in circles.
Generally, vision is best in tree-dwelling snakes and weakest in burrowing snakes. Some have binocular vision, where both eyes are capable of focusing on the same point, an example of this being the Asian vine snake. Most snakes focus by moving the lens back and forth in relation to the retina. Diurnal snakes have round pupils and many ...
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Like other pit viper species but unlike most snakes, rattlesnakes don't lay eggs. Instead, they give birth to live young. Eight is an average-size brood, with the number depending on the snake's ...
Imantodes cenchoa, also known commonly as the blunthead tree snake, the neotropical blunt-headed tree snake, [2] and the fiddle-string snake, [3] is a species of mildly venomous, rear-fanged snake in the family Colubridae. The species is native to Mexico, Central America, and South America. [2]