title: A single average crossed acoustic response.
abstract: Although the Crossed Acoustic Response is the simplest objective test of hearing acuity, as it can be used without an anaesthetic in the mobile child, a serious obstacle to its wide use has been cost. This was because two averagers have been necessary. This paper describes a modification of the equipment which is not only cheap but which can be used to adapt any existing electrocochleograph or cortical evoked response recorder.
mesh_terms: D000669:Amplifiers, Electronic; D002648:Child; D005071:Evoked Potentials; D006311:Hearing Disorders / Q000175:diagnosis*; D006320:Hearing Tests / Q000295:instrumentation*; D006801:Humans