Abstract: A device for improving cognitive and functional capabilities by means of hypoxic and hyperoxic gas mixtures. An air splitter (5) separates oxygen and nitrogen and feeds these gases to a mixer (4), whose mixing rate is determined by feed back from a bio feedback regulator and an oximeter. The oximeter is connected to a finger piece sensor or pulse meter, and/or an ear-piece sensor for receiving inpute from a patient. The gas mixer feeds an adjusted oxygen and nitrogen mixture to the patient by way of a mouthpiece connected to the mixer.

Abstract: The invention relates to methods and devices for training persons by breathing in hypoxic and hyperoxic gas mixtures by means of a device on the order of a ReOxy or CellAir One device, in particular by elderly persons and especially particularly persons with dementia. The cognitive functions are assessed by means of the Dementia Detection Test (DemTec) and Sunderland Clock Drawing Test (CDT); the functional exercise capacity is ascertained for instance by means of a 6-minute walk test (6MWT).