Jumping spider uses fuzzy eyesight to judge distance
A picture is two-dimensional and yet, when we look at it, we perceive depth. A number of visual cues tip us off to the relative distances of items in a photo. One of them is focus; if something is out-of-focus, we know it's not going to be the same distance away as something that appears sharp. To date, we humans were the only animals known to use focus to help estimate depth. But a paper in today's issue of Science provides some compelling evidence that we share the ability with... jumping spiders. Jumping spiders, as their name implies, don't capture their prey in webs. Instead, they make sudden leaps to reach and rapidly disable their targets. As you might imagine, that requires very accurate depth perception. Get the distance wrong and the spider could come up short of its prey, allowing it to escape. Read the comments on this post
Jumping spider uses fuzzy eyesight to judge distance
(PhysOrg.com) -- One of the ways in which humans determine distance is by estimating the sharpness of an image—closer objects produce a sharp image, while those further away are out of ...
Fri 27 Jan 12 from PhysOrg
Seeing green helps spiders perfect jump
ARACHNID FOCUS: Jumping spiders use green light to gauge the distance of their jumps, a Japanese study has found.
Thu 26 Jan 12 from ABC Science
Spiders Hunt With 3-D Vision
Jumping spiders' keen vision makes them the cats of the invertebrate world, but scientists have puzzled over how their miniature nervous systems manage such sophisticated hunting behavior. A ...
Thu 26 Jan 12 from Wired Science
Jumping spiders use blurry vision to judge distance
We don't like blurry vision, and we go out of our way to correct it with ...
Thu 26 Jan 12 from Discover Magazine
Jumping spiders use blurry vision to judge distance, Thu 26 Jan 12 from Discover Magazine
3-D Vision for Tiny Eyes
To estimate pouncing distance, jumping spiders compare crisp images of their prey to blurry ones
Thu 26 Jan 12 from Science Now
Zoologger: How a blurry-eyed spider pounces on target
The Adanson's house jumper is the first animal found using out-of-focus vision to judge the distance to its victims
Thu 26 Jan 12 from Newscientist
Jumping spiders' unique vision revealed
Jumping spiders, which hunt by pouncing on their prey, gauge distances to their unsuspecting meals in a way that appears to be unique in the animal kingdom, a new study finds.
Fri 27 Jan 12 from FOXNews
Jumping Spiders Use Blurry Vision to Pounce
The spiders possess a unique vision that allows them to quickly capture prey.
Thu 26 Jan 12 from Discovery.com
Jumping spiders pounce using blurry green images of prey
A picture is two-dimensional and yet, when we look at it, we perceive depth. A number of visual cues tip us off to the relative distances of items in a photo. One of them is focus; if something ...
Thu 26 Jan 12 from Ars Technica
Total number of sources: 11
Bookmark
