Artifactual Responses when Recording Auditory Steady-State Responses to Bone-Conduction Stimuli / 听力学及言语疾病杂志

ABSTRACT

Objective To explore artifactual responses of auditory steady-state reponses (ASSRs) to bone-conduction stimuli.Methods The present study involved a group of subjects,aged between 5 to 39 months,with bilateral profound sensorineural hearing losse.Recorded were the reponses to multiple bone-conducted 0.5,1,2,4 kHz tone pips repeated at the rates of 77～101 Hz.All the subjects were sedated by Hydrate Chloride during the testing.Results Artifactual ASSRs were seen at 115 and 100.5 dB (re1?N) (The above levels are equivalent to around 60 dB HL) at 1 and 4 kHz.No artifactual responses were recorded at 0.5 and 2 kHz stimuli at the maximum output level.Conclusion Bone-conducted hearing loss greater than moderate can not be tested reliablely due to artifactual responses and lower maximum output level than that of air conduction.