[Some problems concerning electric tests in cases with Bell's palsy (author's transl)]

Some draw backs of Neuronography are discussed: 1) Estimating and correlating response levels is very unreliable. 2) It takes four days for some prognosis. A very fine indicator is the area under the response diagramm, that is the area between curve and Zeroline. To calculate this area we have developed a microprocessor based instrument at the ENT-Clinic Würzburg.