ERA-stimulation with free-programable frequency and intensity sequence--a method to reduce the examination time.

A new method for ERA-stimulation with free-programable sequence of intensity and frequency will described. We developed to realize this method a Free-Programable ERA-Stimulator, FPERAS/74. The expectation has been confirmed that this way of stimulation which includes a regular change of frequency and intensity of the auditory stimuli decreases effective the development of habituation in its amount and velocity. In our experiment (K- and P-experiment) it will be clarified the efficiency of this method both with regard to the time-saving during the recordings of the AEP and its quality comparee with the conventionally determined AEP. It can be stated a triple shortening of the examination time with a simultaneous improvement of the quality and the reproductibility of the AEP.