The central sulcus (fissure of Rolando) separates the frontal lobe (anterior) from the parietal lobe (posterior).
The location of the central sulcus is made by finding the intersection of the superior frontal sulcus with the precentral sulcus on axial slices near the top.
It's not the Roncevaux Pass in the Pyrenees either, and Luigi Rolondo was an early 19th-century Italian neurologist, not an 8th-century Frankish military hero and literary legend.
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