1. A responsive system for treating a neurological disorder in a patient, the system comprising: a control module adapted to be implanted in the patient; and a plurality of electrodes connected to the control module, at least one of which is adapted to be located within a cranium of the patient; wherein the control module is adapted to transmit an output electrical signal from the control module to the patient's brain in response to an input electrical signal originating in a brain of the patient and received by the control module.