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Does the Octopus Hold the Key To Robot Design?
balancedi writes "Simultaneously controling 8 jointless arms without getting them all tangled up is a neat trick that octopuses do with ease. According to a National Geographic article several researchers from around the world think understanding the octopus holds to key to the optimal robot design."
Octopuses have intrigued scientists for years, because they have both long- and short-term memory, they remember solutions to problems, and they can go on to solve the same or similar problems. They have been known to climb aboard fishing boats and open holds in search of crabs. They can figure out mazes, open jars, and break out of their aquariums in search of food.
This part of the linked article rang very true for me.
True story:
Octopus are underrated. Seriously. I used to have an (Octopus bimaculoides) as a pet (her name was Cephus, short for Cephalopod) and I was always amazed at the intelligence and problem solving abilities she exhibited. One day I was returning from working all night at the sleep lab followed by a day of class. I had a new bag of goldfish to feed her and placed them in the "goldfish tank" across the table from her 100gal aquarium. She always got excited at that and would hang on the side of her tank and look at the goldfish. At any rate, I got a couple hours of sleep and then ran back to work for another all night shift. Upon stumbling back home the next day, I was stunned to find no goldfish in the goldfish tank! I did not know if I was just seriously sleep deprived or what, but closer inspection revealed goldfish scales floating around in Cephus's tank........and a trail of dried salt water on the table top from her tank to the goldfish tank. She had opened the top of her tank, navigated across the table to the goldfish tank, helped herself to every last goldfish in the goldfish tank and then crawled back home, closing the top of her tank! All I could do was stare in dumbfounded amazement.
She also exhibited curiosity with new objects placed into her tank, exploring them extensively, and I must admit, it is most interesting in that unlike other aquatic non mammalians.....when you looked into an octopus eye, they look back at you. There is something absolutely intelligent behind those eyes.
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http://news.nationalgeographic.com/news/2001/09/09 07_octoarm.html
In that the octopus has a brain hierarchy. The central brain sends a 'go get that food' command to a sub brain in the tentacle which executes commands in the completion of that goal on its own. The main brain doesn't have to think about controlling the mechanics of each arm.
A friend who is a throbbing-brained molecular biologist, with a PhD and everything :), told me this after too many pints of beer.
He was told by the guy from the next lab over, at lunch, who'd heard it from someone in another lab at a party,...
Some behavioural psychologists - I may have their precise taxonomic appellation incorrect - were planning an experiment with an octopus. They had a large maze, constructed of perspex. At one end was the octopus, at the other some food. The idea was just to time how long it took to navigate the maze and get to the food, which different routes it explored and so on. Well, they spent a long day setting everything up, getting the measuring fu in place and so forth. At the end of the day's work, the experiment was ready to run; they'd even connected the aquarium tank with a nice fresh octopus up to the maze equipment. The plan was to unlock the little hatch and give the octupus free access to the maze the following morning.
So they come in bright and early the next day to find the food gone, the octopus fed, and the little hatchway re-locked from the inside...
Everything I needed to know about life, I learnt from Blake's Seven
I'm glad to see this. Going into computing from a psycology/neuroscience background, I always found biology to be an excellent source of ideas (or if nothing else, metaphors), for my work.
Nature has already solved many a problem (with some flaws like any solution). It's bad enough to reinvent the wheel. It's worse to reinvent something even more complex.
The sad part is wondering what else is out there that isn't being studied because we didn't think of it yet.
"The Sage treasures Unity and measures all things by it" - Lao Tzu
The FA states:
Just as a human arm has joints at the shoulder, elbow, and wrist that allow our arms to bend and rotate, the octopus bends its arm to forming three segments of roughly equal length.
i wonder how roughly equal the segments were. it would be interesting to know if the difference in lengths correspond to the golden mean, ie coreespond to how our limbs are organized.
(from google) the golden ratio = 1.61803399