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tensor tympani

a middle ear muscle that controls the movement of the tympanic membrane (eardrum). Its activation (the tympanic reflex) is part of the acoustic reflex.

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Psychology term of the day

December 26th 2024

tractotomy

tractotomy

n. the surgical interruption of a nerve tract in the brainstem or spinal cord. One form of tractotomy is of benefit in bipolar disorder that is resistant to other forms of treatment.