text: EMG signals have been targeted as control for flight systems. The Human Senses Group at the NASA Ames Research Center at Moffett Field, CA seeks to advance man-machine interfaces by directly connecting a person to a computer.  In this project, an EMG signal is used to substitute for mechanical joysticks and keyboards.  EMG has also been used in research towards a "wearable cockpit," which employs EMG-based gestures to manipulate switches and control sticks necessary for flight in conjunction with a goggle-based display.
  Unvoiced or silent speech recognition recognizes speech by observing the EMG activity of muscles associated with speech. It is targeted for use in noisy environments, and may be helpful for people without vocal cords, with aphasia, with dysphonia, and more.
  EMG has also been used as a control signal for computers and other devices.  An interface device based on an EMG Switch can be used to control moving objects, such as mobile robots or an electric wheelchair.  This may be helpful for individuals that cannot operate a joystick-controlled wheelchair.  Surface EMG recordings may also be a suitable control signal for some interactive video games.
  A joint project involving Microsoft, the University of Washington in Seattle, and the University of Toronto in Canada has explored using muscle signals from hand gestures as an interface device. A patent based on this research was submitted on June 26, 2008.
  In 2016 a startup called Emteq Labs launched a virtual reality headset with embedded EMG sensors for measuring facial expressions. In September 2019 Facebook bought a startup called CTRL-labs that was working on EMG