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computer software for human performance measurement, namely, the detection, measurement, monitoring and recording of eye-gaze direction, eye-closure and blink rates, head positioning, lip movement, facial gestures and facial expression, for use in a wide variety of fields and industries; computer software used in conjunction with video games and interactive applications to animate the facial expression of avatars; computer hardware; apparatus for reproduction and tracking of sound and images, namely, speakers, amplifiers, audio-cassette and video-cassette recorders, and computer and video image display equipment, namely, monitors, flat-panel displays, and movie, photographic and slide projectors; cameras, namely, monochromatic and color video cameras, digital cameras and electronic cameras; head pose and gaze direction tracking apparatus, namely, monochromatic and color video cameras, digital cameras, electronic cameras, computer hardware, computer cables, electrical cables, fiber optic cables, power cables, digital and analog signal carrying cables, and computer software for head pose and gaze direction tracking