Abstract: A method of detecting a thought and generating a control instruction corresponding to the thought includes detecting the thought by monitoring air pressure near a human ear when a user is thinking. In addition, the method includes providing a control instruction corresponding to the detected thought. A system for detecting a thought and generating a control instruction corresponding to the thought is also disclosed and includes a pressure sensor for sensing a pressure near a human ear when a user is thinking, wherein the sensor produces an electrical signal corresponding to the pressure. A processor processes the electrical signal to detect the thought, generates the control instruction in response to the detection, and sends a control instruction to an output peripheral which provides an output control function corresponding to the control instruction.