The inferior colliculus sends auditory information to the medial geniculate body (MGB) of the thalamus. From the MGB, the auditory radiation projects to the primary auditory cortex located on the posterior portion of the transverse temporal gyrus (Heschi's gyrus; Brodmann areas 41 and 42). The adjacent auditory association area makes connections with other parts of the cortex, including Wernicke's area, the cortical area for the comprehension of language.
Cochlear hair cell
Medial geniculate body
What would a lesion at 1 result in? (See Clinical Correlate)
Supenor olivary nucleus
Superior temporal gyrus
Figure IV-5-7. Auditory System
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