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. Author manuscript; available in PMC: 2011 Oct 6.
Published in final edited form as: Commun ACM. 2011;54(5):60–66. doi: 10.1145/1941487.1941506

Figure 1.

Figure 1

Basic design and operation of any BCI system. Signals from the brain are acquired by electrodes on the scalp or head and processed to extract specific signal features that reflect the user’s intent. These features are translated into commands to operate a device. The user must develop and maintain good correlation between his or her intent and the signal features employed by the BCI and the BCI must select and extract features that the user can control and must translate those features into device commands. (adapted from [36]).