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Which midbrain structure sends auditory signals to the medial geniculate nucleus?

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Diagram of a human brain showing a median sagittal section, highlighting the fourth ventricle and cerebellum in the hindbrain, with labeled anatomical structures including the pons, medulla oblongata, and central canal of the spinal cord. — thalamus Sagittal section of the human brain, showing structures of the cerebellum, brainstem, and cerebral ventricles.

The midbrain structure that sends auditory signals to the medial geniculate nucleus is the inferior colliculus.123

Located in the roof plate of the midbrain, the inferior colliculus serves as a primary auditory center, receiving both crossed and uncrossed auditory fibers before projecting them to the medial geniculate nucleus, which then relays this information to the auditory cortex.23