Inferior frontal gyrus
| Brain: Inferior frontal gyrus | ||
|---|---|---|
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| Inferior frontal gyrus of the human brain. | ||
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| Lateral surface of left cerebral hemisphere, viewed from the side. | ||
| Latin | gyrus frontalis inferior | |
| Gray's | subject #189 822 | |
| NeuroNames | hier-67 | |
The inferior 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.)
More of a region than a true gyrus, the inferior frontal gyrus includes:
- Broca's area, which is important for speech production
- the representation of the face (that is, neurons controlling muscles of facial expression) in the primary motor cortex, Brodmann area 4
- the Pars opercularis, which has mirror neurons that are important for imitation
The borders of the inferior frontal gyrus are the inferior frontal sulcus above; the lateral sulcus below; and the precentral sulcus behind.
Categories
Cerebrum