Skip to main content
. 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 2.

Figure 2

Present-day human BCI systems. A–B are non-invasive and Cis invasive. A. Sensorimotor rhythm BCI. Scalp EEG is recorded over sensorimotor cortex. Users control the amplitude of rhythms to move a cursor to a target on the screen. B. P300 BCI. A matrix of possible choices is presented on a screen and scalp EEG is recorded while these choices flash in succession. C. Cortical neuronal BCI. Electrodes implanted in cortex detect action potentials of single neurons. Users learn to control neuronal firing rate to move a cursor on a screen. (adapted from [36]).