Middle frontal gyrus

The middle frontal gyrus makes up about one-third of the frontal lobe of the human brain. (A gyrus is one of the prominent 'bumps' or 'ridges' on the surface of the human brain.)Position of middle frontal gyrus (shown in red).Left cerebral hemisphere seen from above.Lateral surface of left cerebral hemisphere.Lateral surface of right cerebral hemisphere. Middle frontal gyrus is noted by red arrows.Cerebrum. Lateral view.Deep dissection.Cerebrum. Lateral view.Deep dissection.Cerebrum. Lateral view.Deep dissection. The middle frontal gyrus makes up about one-third of the frontal lobe of the human brain. (A gyrus is one of the prominent 'bumps' or 'ridges' on the surface of the human brain.) The middle frontal gyrus, like the inferior frontal gyrus and the superior frontal gyrus, is more of a region in the frontal gyrus than a true gyrus. The borders of the middle frontal gyrus are the inferior frontal sulcus below; the superior frontal sulcus above; and the precentral sulcus behind.