Problems in electric response audiometry (ERA) during sedation T. Suzuki 129 Artifact recognition and diazepam in electric response audiometry M. Spreng 137 The role of sedation in ERA from the vertex Routine use of electrocochleography (cochlear audiometry) on human subjects

Electrocochleography (ECoG) has been an important tool in the diagnosis of Meniere’s disease or endolymphatic hydrops. There are two methods employed, transtympanic and extratympanic. Many have regarded the results of these methods as being equally reliable. The purpose of this study is to determine any differences in sensitivity between the two methods. In this study patients with known endoly...

Transtympanic electrocochleography using rarefaction and condensation clicks was performed on 122 ears of 112 patients, including 98 ears of 89 patients with Menière's disease (MD) and 24 ears of 23 patients without Menière's disease (NMD). The mean action potential (AP) latency difference between rarefaction and condensation clicks was 0.40 +/- 0.37 msec in the MD group and 0.06 +/- 0.07 msec ...