1. An image generation system for generating an image, the image generation system including: an eye-tracking system capable of determining a user's eye orientation and outputting a signal indicative of the eye orientation; a bio-feedback sensor capable of detecting activity of one or more physiological functions of the user and outputting a signal indicative of the level of activity; and a processor adapted to receive and process the output signals from the eye-tracking system and bio-feedback sensor; wherein the processor determines an image to be generated indicative of the signals from the eye-tracking system and bio-feedback sensor; a first display for displaying the generated image; a second display for presenting a first image to the user; wherein the eye-tracking system is capable of determining one or more points of eye-fixation of a user on the first image, the processor determining an image to display on the first display indicative of the signals from the eye-tracking system and bio-feedback sensor.