An overview of the auditory pathway
This is a highly schematic representation of the auditory pathways. The auditory nerve projects from the ear to the cochlear nucleus. The cochlear nucleus projects to the superior olive, on both the ipsilateral (same) and contralateral (opposite) side of the brain. Notice that information from both ears is carried along the pathway beginning with the superior olive. The superior olive projects to the inferior colliculus which projects to the medial geniculate body, or nucleus. The MGB projects to the auditory cortex, in the temporal lobe of the brain.
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