straight gyrus (SRG)
The term straight gyrus refers to a convolution identified by dissection at the ventromedial margin of the frontal lobe. In the human it is located between the inferior rostral gyrus on the medial surface of the lobe and the medial orbital gyrus on the ventral surface. Its boundary on the medial surface is defined by the rostral sulcus and its boundary on the ventral surface by the olfactory sulcus. It extends from the frontal pole to the level of the anterior olfactory nucleus ( Mai-1997 ).
In the macaque its medial and ventral boundaries are the same as in the human, and it extends from the frontal pole to the level of the olfactory tubercle ( Martin-2000 ).
Equivalent structures are not seen in the smooth cerebral cortex of the rat and mouse ( NeuroNames ).
Also known as: gyrus rectus, Gyrus rectus, straight gyrus, rectus gyrus, rectal gyrus, medial part of gyri orbitales, ventromedial gyrus
NeuroNames ID: 94
