[Preparation and processing of clinical ERA-datas using a small laboratory computer: tentative experiences and...

The efficacy of the Electric Response Audiometry (ERA) in the supraliminal range can be enlarged and improved by the use of laboratory computers. The acoustic system has to be described as objectively as possible from the lot of datas resulting especially from clinical examinations. An off-line-program sequence which may be routinely used, was elaborated for the laboratory computer PDP 12 in order to measure and evaluate the late, acoustically evoked potential N1. In addition to the organisation and documentation of the datas it is shown that for many cases the described and performed preparation and processing of the datas yield qualitatively and quantitatively better results.