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Old 01-27-2012, 10:35 AM   #1
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Default Depth Perception in Jumping Spiders

Jumping Spiders Use Image Defocusing For Depth Perception – Webvision

"Jumping spiders (Salticidae) are the largest family of spiders and have perhaps the best visual acuity of the invertebrates.
It turns out that in addition to excellent visual acuity, jumping spiders use a previously unknown method of determining depth. The trick that humans use to judge depth is using image offset coming from each eye to then estimate depth through parallax. Fusion of the imagery occurs in the brain with the percept of seeing a single image despite two separate images being transmitted to the brain..."

"Jumping spiders however, use an entirely different means of estimating distances [image defocusing] that relies on spectral perception in the multi laminar principal eyes."
“Every artist dips his brush in his own soul and paints his own nature into his pictures.”

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Old 01-27-2012, 03:31 PM   #2
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Thanks, suunto
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Old 01-28-2012, 09:59 AM   #3
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Jumping spiders are one of the cuties.
The successful woman is the woman that had the chance and took it!

A walk among the elusive Whitetail Deer
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depth, jumping, perception, spiders

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