Communication and detection systems using eye and eyelid movements, pupil dilation and other parts and functions of the eye and of the head, as well as oculometric data to interpret voluntary and involuntary signs of a person's physical, emotional, and mental state, comprised of biosensors in the nature of headsets, eye glass frames, protective eye gear, protective head gear, head bands, helmets, masks, hats, visors, or ventilators configured to be worn on a user's head that carry infrared emitters to illuminate the user's eyes, and sensors and cameras to detect and/or generate video images of the user's eye, eyelid, pupil, and/or other features of the eye and detect eye or eyelid movement; computer display monitors, data processors, wireless radio frequency transmitters and radio frequency receivers for communicating with such biosensor devices and/or processing or displaying data from such biosensor devices; synthesized voice modules comprised of speakers, computer memory integrated circuits and circuit boards, electrical controllers, computer hardware and software that uses oculometric, physiological and performance vigilance testing outcome data to enable its user to analyze, predict outcomes and create responses to such data, such as hands free movement of the cursor or information on the computer screen, triggering computer operations, or turning on/off or controlling any electrical or electromechanical device; computer hardware and software that uses oculometric, physiological and performance vigilance testing outcome data to calculate the degree of difference between head position and eye position