[On the testing of the difference limen of intensity (author's transl)]

To extinct to a great extent the methodic faults (rhythm) at the common way of the measurement of the difference-limen of intensity, the original parameter (the intensity) is randomized. The patient himself has to find out the minimal hearable modulation at this intensity. The testing-signal is interrupted in a rhythm of 0.8 cps, so that the effects of adaptation are reduced to a great extent. This test was carried out on 20 normal-hearing persons; 13 of them also were examined with a continuous tone; by this continuous tone the difference-limen of intensity was significantly reduced (p less than 1%).