Figure 6.

Brain control performance improvement over multiple sessions. A, Thirty-trial averaged success rate during the first closed-loop, brain control session. Dashed line denotes average success rate for the session, and lighter dashed line denotes the chance level calculated for that session. B, Improved brain control success rate measured during session 6, after learning had occurred. C, After several days, behavioral performance improved significantly. Session-average success rate increased more than twofold and the time needed for the cursor to reach the target decreased by more than twofold.