[Behavior of the impedance of the middle ear and of the stapedius reflex under static conditions of barometric depression].

The authors present the preliminary results of a range of their aero-space medicine studies, carried out in hypobaric chamber, in simulated flight and at different atmospheric pressures, to asses the tubal function in normal hearing people. The tympanometric determination through a Z072 Madsen inpendenzometer in static and dynamic conditions of barometric depression gave a clear and exact indications about the impedence variation capacity of the middle ear in similated flight, giving homogenous data which allow the use of this method in flying recruitment aptitude test routine.