In past experiments that I'm aware of, you steered the cursor, or typed a letter, by using a few seconds of _visualizing_ a sort of "command image". The command

In past experiments that I'm aware of, you steered the cursor, or typed a letter, by using a few seconds of _visualizing_ a sort of "command image". The command image recall would essentially generate a recognizable signal in a sensor array that is in a cap the patient wears.