orbitomedial prefrontal cortex
Acronym: OMPFC
The term orbitomedial prefrontal cortex (OMPFC) refers to a combination of some 20 histologically defined areas in rostral frontal lobe (FLB) and the anterior cingulate gyrus (ACG) of the limbic lobe (LLB). In the human it includes areas of the frontopolar gyri (FPG), the orbital gyri (ORG), the frontomarginal gyrus (FMG), and the inferior rostral gyrus (RSGi) of the FLB, together with ventral parts of the ACG of the LLB ( Ongur-2003 ). In the macaque, the histologically identified areas are somewhat different, but they occupy topologically equivalent structures ( Carmichael-1994 ).
      ‘Prefrontal’ in the name can be a source of confusion, because prefrontal cortex is composed exclusively of granular and lightly granular cortex ( Wise-2008 ), whereas the OMPFC includes large areas of agranular cortex as well. The rat and mouse share the agranular areas, most of which are in anterior cingulate cortex (ACC) of the LLB of the primate Wise-2008 ) but not the prefrontal granular areas.
      Updated 12 Sep 2024.
     

Also known as: No other name for this structure has appeared in PubMed.NeuroNames ID : 3506


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