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A, The insula is anatomically subdivided in an anterior part that comprises 3 short gyri (a, anterior; m, middle; p, posterior) and a posterior part that comprises 2 long gyri (A, anterior; P, posterior). B, The insula is covered by the suprasylvian and infrasylvian opercular regions that are essential for motor, sensory, auditory, and language processing. Numbers refer to Brodmann’s area. CS indicates central sulcus of the insula.
