From Facebook to Elon Musk, technology visionaries are working on the promise of brain-machine interfaces (BMIs) to do everything from creating a sixth sense to controlling hearing aids. One major application area for the technology is allowing people with physical disabilities such as spinal injuries to more easily interact with their environment by controlling a wheelchair, interacting with a computer, or operating small robots.
However, current BMI systems require the use of a large, bulky system called an electroencephalograph (EEG). Traditionally, EEG signals are measured using a cap that covers the entire head. So researchers wanted to find a way to miniaturize the technology and make it more discreet and usable in everyday situations.
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