Word: feedback
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...against other players online, in real time! Interactivity! What's next? Some day someone will figure out a way to truly experience the "feel" of throwing and catching a virtual ball remotely, through complicated algorithms developed by Indian software engineers (who, by the way, play cricket) that replicate "force feedback" as encountered in real life. Then we'll almost be back to square...
...limbs), to control their own biological limbs. It could also give people extended senses, allowing them to have virtual limbs in cyberspace or robotic limbs in the physical world. "The brain knows that it has an arm and a hand because it is connected to these things and gets feedback from them," Nicolelis says. "The same could be true for robotic or virtual appendages. If you control a remote hand that senses objects and sends tactile sensations back to your brain, it behaves as if it's your own hand. It becomes part of you. Your body becomes extended beyond...
...human brain to truly incorporate prosthetics into its body map requires feedback: the brain will only become aware of its new limbs if they make their presence known. To see how the monkeys might respond to this kind of anatomical extension, Nicolelis is creating a feedback loop between the monkeys and the robotic arm. In the next experiments the monkeys will have sensors attached to their bodies, so that the robotic arm delivers tactile sensations directly to their skin. When the monkey's brain waves impel the robotic arm to grasp a piece of fruit, for example, the animal will...
...museum's Chinese teapot collection via laser photography. The pots can then be "touched" by anyone, anywhere - as long as they have some fancy (and still fairly bulky) equipment like the Phantom, produced by SensAble Technologies Inc. of Woburn, Massachusetts. A stylus attached to the desktop device transmits force feedback to the user's fingertips. Following a model on your computer screen, you run the stylus over the "body" of the virtual teapot in the air and feel its curved, slick exterior. Move upward and you sense the contour...
...lets me do. On a computer screen a 3-D image of a ball appears as well as a representation of my hand, which I control by moving the big, spiderlike exoskeleton I'm wearing. As I manipulate the ball, the fingertips of the CyberGrasp sense the force feedback via a network of artificial tendons. I "feel" the ball as I bat it through cyberspace. There are flaws: the hand sometimes goes through the object. But it's a thrill touching something that isn't there...