Physiological research. Researcher adjusting the controls of a manoevrable platform being used in research into the effects that extreme conditions have on human physiology. The blindfolded subject is strapped into a stretcher. This is simulating the conditions experienced by those airlifted to safety or lowered down mountains. The research is designed to find out how the body reacts to stress from being disorientated and dizzy. Photographed at a facility of the French national military health research centre (CRSSA), France.