Pit viper heat pits don't have good resolution
نویسندگان
چکیده
The eye is one of the most complex structures in body, focusing light onto specialized light-sensitive cells, then transferring that information to brain for processing. But eyes aren't only way animals sense waves on electromagnetic spectrum. Pit vipers, such as western rattlesnake (Crotalus oreganus), have evolved loreal pits, which infrared radiation given off by their surroundings and other animals. However, these heat sensors nearly good thermal imaging cameras so many documentaries compare them to. In fact, resolution snake's pits poor Rulon Clark, George Bakken, Evan Reed Ashana Soni from San Diego State University, USA, believe some pit vipers must an image sharpener built into nervous system help overcome this problem.The team knew previous studies rattlesnakes capable small amount sharpening, but isn't enough make a mouse stand out background with varying temperatures. Could there be another area helps refine images even further? Clark colleagues devised test placing cool perforated sheet metal front heated plate swinging target resulting pattern warm polka-dots. Because was average temperature polka-dots cooler metal, snakes would notice if they could individual spots. didn't respond moving heads or flicking tongues, both signs noticed target, difference between increased 15°C, were larger smaller.The quick point testing rattlesnake's sensing room no probably not ecologically relevant almost always ambient nature see, aid eyesight, means prey detection. also mention while may high-resolution vision, can still prey, especially relatively cool. While might see like camera, are able use strike.
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ژورنال
عنوان ژورنال: The Journal of Experimental Biology
سال: 2022
ISSN: ['1477-9145', '0022-0949']
DOI: https://doi.org/10.1242/jeb.245369