Circular sulcus of insula
Encyclopedia
The insula
is surrounded by a deep circular sulcus which separates it from the frontal, parietal, and temporal lobes.
Insular cortex
In each hemisphere of the mammalian brain the insular cortex is a portion of the cerebral cortex folded deep within the lateral sulcus between the temporal lobe and the frontal lobe. The cortical area overlying it towards the lateral surface of the brain is the operculum...
is surrounded by a deep circular sulcus which separates it from the frontal, parietal, and temporal lobes.