It is well known that auditory evoked response shows a- typical waveform. However, it has also variabilities across children and in each trial. In a young child, this variability is so eminent that the deviation from typical response patterns becomes greater. These facts make it difficult to determine the presence or absence of the auditory evoked response. It is admitted that “V” potential is generally evoked by not only auditory but also tactile and visual stimuli, then there are similarities of waveforms among these responses. In this experiments, the waveforms in responses to those stimuli were compared. As a result, the decision of hearing loss in young children was performed more easily and exactly. This procedure is especially useful for identification of a small and obscure response which often appears in severe hard of hearing children.
The problem of the deaf, treated as the physically handicapped, are medical as well as social one especially in infants, children and the old. The present situation for diagnosing the persons with hearing impairment was stated and criticized The importance of improving the diagnostic technics in audiologic fields of the so-called designated doctors in one hand and that of developing the simple method to decide the indication of the hearing aid in the other hand were stressed.