OBJECTIVE To find the best way to evaluate the hearing threshold with the objectivethresholds of auditory brainstem response(ABR) and 40Hz auditory event related potential(40Hz AERP) .

• 目的探索应用听性脑干反应(auditory brain stem response,ABR)和40Hz听觉相关电位(40Hz auditory event related potential,40Hz AERP)来客观评估听阈的最佳方法。