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Real-Time Control of Wheelchairs with Brain Waves
Date:6/29/2009

ystem fuses RIKEN's blind signal separation (1) and space-time-frequency filtering (2) technology to allow brain-wave analysis in as little as 125 ms, as compared to several seconds required by conventional methods. Brain-wave analysis results are displayed on a panel so quickly that drivers do not sense any delay. The system has the capacity to adjust itself to the characteristics of each individual driver, and thereby is able to improve the efficiency with which it senses the driver's commands. Thus the driver is able to get the system to learn his/her commands (forward/right/left) quickly and efficiently. The new system has succeeded in having drivers correctly give commands to their wheelchairs. An accuracy rate of 95% was achieved, one of the highest in the world.

Plans are underway to utilize this technology in a wide range of applications centered on medicine and nursing care management. R&D under consideration includes increasing the number of commands given and developing more efficient dry electrodes. So far the research has centered on brain waves related to imaginary hand and foot control. However, through further measurement and analysis it is anticipated that this system may be applied to other types of brain waves generated by various mental states and emotions.

A demonstration video (in Japanese only) is available from this link. (Please note that due to high demand, the download speed may be a bit slow)
http://www.riken.jp/r-world/info/release/press/2009/090629/press_090629.asx

BTCC was established in 2007 by RIKEN, an independent administrative institution (Ryoji Noyori, President), as a collaborative project with Toyota Motor Corporation (Akio Toyoda, President), Toyota Central R&D Labs, Inc. (Takashi Saito, President), and Genesis Research Institute, Inc. (Kiyoshi Na
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