The inferior frontal sulcus runs from front to back on the frontal lobe, separating the middle frontal gyrus above from the inferior frontal gyrus, which contains Broca area, below.
| Location | Lateral surface of the frontal lobe, from the precentral sulcus forwards |
|---|---|
| Parts |
|
| Connections | |
| Blood Supply | Middle cerebral artery (prefrontal branches) |
Landmark marking the upper boundary of the inferior frontal gyrus.
Neurosurgeons use it to locate Broca area before operating near the language cortex in the dominant hemisphere.
Language production difficulty after damage to the inferior frontal gyrus below this sulcus.
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