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How do brain computer interfaces work? Brain waves or EEG signals are monitored by electrodes, sent to an amplifier that is converted to a signal that can be read by a computer. The signals read by the computer can be monitored so that when they reach a threshold, it shows that a person is excited or relaxed. That data can be fed to an application and allow clients to make sentences or move balls on a screen. Data can also be used to interface with music or to learning software to help in client rehabilitation.
Brain Computer Interface Research
MIT and Boston University have made recent strides to allow a paralyzed man to express vowel sounds via a computer. Other devices have showed that a person can play virtual ping pong with their brain waves. One application allows the recognition of letters to allow an application to make sentences so that a neuro-injured person can create documents.
The Future of Brain Computer Interfaces
The future of brain-computer interfaces is unknown, but the sky is the limit. However, the law has not caught up to the technology and its stressed that scientists need to consider the boundaries of these applications. Essentially, brain waves could be deciphered and categorized into a language that is decipherable. At that point, there is the possibility that one could say "read someone's mind".
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