Force and/or motion measurement system and a method of testing a subject

A measurement and analysis system, comprising:

• at least one visual display device having an output screen, the at least one visual display device displaying one or more scene images on the output screen so that the images are viewable by a subject, the at least one visual display device comprising a projector having a fisheye lens and a concavely shaped projection screen, wherein the fisheye lens is disposed at a non-zero, angled orientation relative to a body of the projector, wherein the projector projects an image through the fisheye lens, and onto the concavely shaped projection screen, and wherein the non-zero, angled orientation at which the fisheye lens is disposed relative to the body of the projector is approximately 90 degrees;
• an eye movement tracking device tracking eye movement and/or eye position of the subject while the subject performs one or more simulated tasks, interactive games, training exercises, or balance tests, the eye movement tracking device outputting one or more first signals that are representative of the detected eye movement and/or eye position of the subject;
• a head position detection device, the head position detection device detecting a position of a head of the subject and outputting one or more second signals that are representative of the detected position of the head of the subject;
• a force measurement assembly configured to receive the subject, the force measurement assembly including:
• a surface for receiving at least one portion of the body of the subject;
• and
• at least one force transducer, the at least one force transducer sensing one or more measured quantities and outputting one or more third signals that are representative of forces and/or moments being applied to the surface of the force measurement assembly by the subject;
• and
• a data processing device operatively coupled to the at least one visual display device, the eye movement tracking device, the head position detection device, and the force measurement assembly, the data processing device receiving the one or more first signals that are representative of the detected eye movement and/or eye position of the subject and the one or more second signals that are representative of the detected position of the head of the subject, the data processing device determining one or more gaze directions of the subject using the one or more first signals and the one or more second signals, the data processing device further determining a position of one or more objects in the one or more scene images of the at least one visual display device, and comparing the one or more gaze directions of the subject to the position of the one or more objects in the one or more scene images of the at least one visual display device, or computing a first time delay between a movement of the one or more objects in the one or more scene images of the at least one visual display device and a change in the gaze direction of the subject, the data processing device additionally receiving the one or more third signals that are representative of the forces and/or moments being applied to the surface of the force measurement assembly by the subject and converting the one or more third signals into output forces and/or moments, and the data processing device assessing a performance of the subject while performing the one or more simulated tasks, interactive games, training exercises, or balance tests using the comparison of the one or more gaze directions of the subject to the position of the one or more objects or the first computed time delay of the subject, and using the output forces and/or moments being measured by the force measurement assembly.