You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Attenuation reflex is lost in case of and explain in detail?
It is based on the fact that a loud sound, 70-100 dB above the threshold of hearing of a paicular ear, causes bilateral contraction of the stapedial muscles which can be detected by tympanometry. Stapedial reflex is elicited with a sound of 70-100 dB SL Absence of Stapedial reflex when hearing is normal indicates lesion of the facial nerve, proximal to the nerve to stapedius. Stapedial reflex becomes absent when stapes is fixed.