Closed loop ECoG-based computer cursor control. One-dimensional computer cursor control using the Craniux system in a subject implanted with ECoG electrodes. Top. Raw time-domain ECoG signal for one of two electrodes used for cursor control. Top-middle. Time frequency data saved by the Craniux system for the same electrode. Bottom-middle. Control signal generated by the Craniux system to control computer cursor movement. Positive control signal values move the cursor in the up direction, while negative control signal values will move the computer cursor down. Note that control signal values are unitless as they have been normalized to zero-mean and unit variance. Bottom. Vertical cursor positions generated by the neural control signal. Dashed black lines represent target onset, green circles indicate the position of presented targets, blue lines indicate cursor trajectories for successful trials, and red lines indicate cursor trajectories for unsuccessful trials.