Areas 3, 1 & 2 – [[Primary Somatosensory Cortex]] (frequently referred to as Areas 3, 1, 2 by convention)

[[Brodmann area]] (BA) 3 is subdivided into areas 3a and 3b. Where BA 1 occupies the apex of the [[postcentral gyrus]], the rostral border of BA 3a is in the nadir of the [[Central sulcus]] and is caudally followed by BA 3b, then BA 1, with BA 2 following and ending in the nadir of the [[postcentral sulcus]].