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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Hyperacusis in Bell's palsy is due to the paralysis of the following muscle -
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The correct answer is  Stapedius muscle dampens excessive vibrations of the stapes caused by high pitched sounds in order to protect the internal ear.
If this protective reflex is not elicited, it indicates stapedius paralysis and results in hyperacusis.