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Category: Games and Puzzles

Air Guitar Hero

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---- CUSTOMIZED ADAPTATION --------- PURPOSE: To create a custom adapted version of “Guitar Hero” for individuals with upper limb disabilities or amputation to provide fun, entertaining and therapeutic exercise. “Air Guitar Hero” is an adaptation created by biomechanical engineer Robert Armiger and surgical roboticist Carol Reiley of Johns Hopkins University. The device translates the electrical impulses that occur between a muscle and the brain in the form of a guitar strum. Originally conceived as a fun and playful exercise for those who have upper limb disabilities, a previous version was costly whereas the Air Guitar Hero provides a less expensive alternative. The newer version requires a Wii console, a hacked version of both Guitar Hero and one of its basic controllers, electrodes, amplifiers, a USB video capture device, and a computer. As a muscle contracts or flexes, it produces nervous electrical activity. While faint (in the millivolt range), these signals can be detected by placing electrode sensors on the skin. The technology to measure, evaluate, and process muscular electricity is called electromyography (EMG). Air Guitar Hero uses EMG to send signals to the Wii console to control the game. But since the electrical signal generated by twiddling your fingers is very weak, additional computation must be performed to generate reliably accurate commands. The system uses pattern recognition algorithms to identify patterns in the EMG signals and decide which colored button to activate. The algorithms require training data to provide examples of what signal characteristics to look for. First, the user must correctly play on-screen notes with the guitar while the electrodes record the user’s EMG signals. Next, the recorded data is used to train a model for recognition the next time the user makes those movement patterns. With continued practice Air Guitar Hero can be useful for building muscle tone and dexterity. AUTHOR: Matthew Hawkins . TITLE: 'Guitar Hero' used to help rehabilitate amputees. WEBSITE: InGame on MSNBC.com Tech. REF: http://www.ingame.msnbc.msn.com/technology/ingame/guitar-hero-used-help-....


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Air Guitar Hero

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