Patients & Methods; Electroaudiometry (EAM) is a subjective, noninvasive investigation where the stimulating electrode lays in the external ear canal. It was performed in 86 deaf patients. In contrast, to detect the electrically evoked auditory brainstem responses (EABR), myringotomy is necessary and a stimulating electrode has to be inserted close to the round window. EABR is was performed in ...