The paper is a result of theoretical knowledge as well as 25 years experience of acoustic evoked potentials registration. The objectivenes of results of ERA registration needs proper hearing organ stimulation as well as proper interpretation of results. There was described various types of hearing potentials registered from all order neurons of hearing pathway anal criteria of acoustic parameters in normal hearing ERA registration.
Particularly there was analyzed various types of acoustic stimulus, time of its duration, frequency of its repetition and number of stimulus.
The authors also described real signal to noise ratio in ERA registration.