Squid to see a 3D movie a unique new study of depth perception


Scientists have cuttlefish to wear special 3D glasses to test stereoscopic viewing.

Wardill laboratory

Cuttlefish wear the 3D glasses will not enjoy the latest super hero movies, but they are helping scientists better understand how they look when in search of food.

Octopus-like cephalopods can move their eyes independently, which gives them a 360 degree field of vision. Each squid eyes move slightly different positions, to recognize objects at a distance. Scientists want to test squid to see if they are using a three-dimensional view, even if their eyes move differently than the human eye.

Stereoscopic vision refers to the ability to see both eyes in similar but slightly different way. Stereopsis allows humans to judge distance and having a real in-depth view, by the extraction of the information of the left and right eyes and then let our brains do some complex processing. The 3D glasses also use this technique to create the illusion of depth.

University of Minnesota researchers led by Trevor Wardill and his colleague Rachael Feord at the University of Cambridge want to try whether squid also uses a perspective view seen from the-so they are equipped with biological and micro 3D glasses.

Get a tiny 3D glasses to stay in the squid not so easy, but a superglued Velcro to bring the glasses secured to their test subjects. The scientists then put the squid to wear 3D glasses in a groove, and the underwater movie on the screen plays the moving picture of the shrimp.

Squid see the shrimp the film moving along at a slightly different position of each eye. By the shrimp the movie image seems to be close to or far Cuttlefish wear the 3D glasses Will change their attack range before suddenly moving the shrimp.

“If you have like a long way apart, the squid think the shrimp is really close, they return and try to shoot their tentacles in front of them,”Wardill told The Guardian on Wednesday. “However, if you flip the image and the shrimp looks like behind the scenes they’ll swim right.”

This study, published in the journal Science Advances, on Wednesday, concluded that the squid do indeed use the three-dimensional view. However, vertebrates and like humans, a squid using a three-dimensional view in a different way-the image processing in the brain occurs in a different way. These findings can be applied to real-world engineering problems.

“Creatures like squid or Mantis may seem really strange, but understanding them will help us together with the kind of machine vision that are most suitable for different situations, say, for a flight of drones and robot vacuum cleaner on the security cameras,”University of Newcastle Professor Jane Read-who wrote her own research in a perspective view in Mantis-told The Guardian. “They are amazing examples of the evolution of the project, and we have so much to learn from them.”

As expected, the social media response of the cuttlefish to wear 3D glasses stereoscopic studies prove to be as entertaining, as the research itself.

“My wish now is that each species has its own cute set of 3D glasses to study its stereo vision,”a Twitter The user-written.

“Love Trevor Wardill’s research into the eyes of the cuttlefish participation Velcroing3D glasses to them. I think they fit them!” Another user tweeted.

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