Figure 2

Top : Schematic of the sequences of screens that the patient faced at trial start (left), during SCP-controlled cursor movement toward a target (middle, shows the path of cursor movement), and the final, brief reward screen of a "smiley" on correct trials. Bottom: Schematic of the logic of SCP control. The average EEG during the last 0.5 s of the first 2 s following trial start was used as a baseline for subsequent EEG changes during the next 3 s. EEG was assessed relative to baseline during the last 0.3 s of the feedback phase to determine which target the cursor had reached.