| The term triangular area 45, or Area triangularis (Brodmann), refers to a subdivision of the cytoarchitecturally defined frontal region of cerebral cortex. In the human, it occupies the triangular part of inferior frontal gyrus (H) and, surrounding the anterior horizontal limb of lateral sulcus (H), a portion of the orbital part of inferior frontal gyrus (H). Bounded caudally by the anterior ascending limb of lateral sulcus (H), it borders on the insula in the depth of the lateral sulcus . Cytoarchitectonically it is bounded caudally by the opercular area 44, rostrodorsally by the middle frontal area 46 and ventrally by the orbital area 47. |
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