orbital gyri
Acronym: OrG
The term orbital gyri refers to a set of convolutions on the ventral surface of the frontal lobe in primates. It is defined on the basis of dissection ( Nomina-1983 ). In the human it consists of the medial orbital gyrus, the intermediate orbital gyrus, the lateral orbital gyrus, the frontomarginal gyrus, and the posterior orbital gyrus ( Mai-1997 ).
     In the macaque it consists of the medial orbital gyrus, lateral orbital gyrus and even more lateral fronto-orbital gyrus ( Krieg-1975 ). For segmentation of this region on the basis of internal architecture in the macaque see orbitomedial prefrontal cortex (macaque).
     Equivalent topological features are not present in the smooth cerebral cortex of the rat or mouse. For comparable architectonic areas in the rodent see orbital areas (rodent).

Also known as: orbital area, orbital cortex, orbitofrontal cortex, orbitofrontal gyri, orbitofrontal gyrus, orbitofrontal region, Gyrus orbitalisNeuroNames ID : 91

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