Assertion: perceiver | /r/CapableOf | view video
Facets:
Source sentences:
text: a research procedure used to determine the information people use to perceive and identify coordinated human actions; it involves placing LEDs or light-reflecting material on certain joints of a person, then filming or videotaping the person performing an action; when an observer views the film or video, he or she sees only the points of light of the LEDs or light-reflecting markers, which identify the joints in action.