'Brain-computer interface' allows people to control a robotic arm with their mind Uses signal processing, machine learning to convert'thoughts' into actions Researchers say it's the first time it's been done without use of a brain implant'Brain-computer interface' allows people to control a robotic arm with their mind Uses signal processing, machine learning to convert'thoughts' into actions Researchers say it's the first time it's been done without use of a brain implant To use it, operators must wear a high-tech EEG cap equipped with 64 electrodes. The system uses advanced signal processing and machine learning to convert'thoughts' into actions, allowing them to reach and grasp objects without ever lifting a hand Transform your selfie into a 3D avatar: Startup uses... Bizarre'Death Star' spotted over Japan: Alien hunters claim... What would REALLY happen if an asteroid struck the ocean:... The ultimate power nap: Smart eyeshade uses sensors to wake... Transform your selfie into a 3D avatar: Startup uses... Bizarre'Death Star' spotted over Japan: Alien hunters claim... What would REALLY happen if an asteroid struck the ocean:... The ultimate power nap: Smart eyeshade uses sensors to wake... First, eight healthy human subjects had to learn to imagine moving their own arms without actually doing so. They started by controlling a virtual cursors on a computer screen while wearing the EEG cap.