{"id":856,"date":"2015-08-19T02:58:11","date_gmt":"2015-08-19T02:58:11","guid":{"rendered":"http:\/\/www.kurzweilai.net\/?p=259814"},"modified":"2015-08-19T02:58:11","modified_gmt":"2015-08-19T02:58:11","slug":"a-brain-computer-interface-for-controlling-an-exoskeleton","status":"publish","type":"post","link":"https:\/\/hoo.central12.com\/fugic\/2015\/08\/19\/a-brain-computer-interface-for-controlling-an-exoskeleton\/","title":{"rendered":"A brain-computer interface for controlling an exoskeleton"},"content":{"rendered":"
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A volunteer calibrating the exoskeleton brain-computer interface (credit: (c) Korea University\/TU Berlin)<\/p><\/div>\n

Scientists at Korea University<\/a> and TU Berlin<\/a> have developed a brain-computer interface (BCI) for a lower limb exoskeleton used for gait assistance by decoding specific signals from the user’s brain.<\/p>\n

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LEDs flickering at five different frequencies code for five different commands (credit: Korea University\/TU Berlin)<\/p><\/div>\n

Using an electroencephalogram (EEG)<\/a> cap, the system allows users to move forward, turn left and right, sit, and stand, simply by staring at one of five flickering light emitting diodes (LEDs).<\/p>\n

Each of the five LEDs flickers at a different frequency, corresponding to five types of movements. When the user focuses their attention on a specific LED, the flickering light generates a visual evoked potential in the EEG signal, which is then identified by a computer and used to control the exoskeleton to move in the appropriate manner (forward, left, right, stand, sit).<\/p>\n