The term anterior long gyrus refers to one of two long insular gyri in the posterior part of the humans insula. Identified by dissection its rostrodorsal boundary is the central insular sulcus. It is separated, sometimes only partially, from the posterior long gyrus by the postcentral insular sulcus ( Crosby-1962; Duvernoy-1992 ). It is found only in humans, not in macaques ( Mufson-1997 ) or rodents ( NeuroNames ).