|Brain: Orbital part of inferior frontal gyrus|
|Lateral view of a human brain, main gyri labeled.|
|Lateral surface of cerebral cortex|
|Latin||pars orbitalis gyrus frontalis inferior|
The Orbital part of inferior frontal gyrus is a portion of the frontal lobe.
|Brain: Pars opercularis|
|Lateral surface of left cerebral hemisphere, viewed from the side. (Pars opercularis visible near center).|
|Brodmann area 44|
|Latin||pars opercularis gyri frontalis inferioris|
|Part of|| Inferior frontal gyrus|
In the human brain the Pars opercularis (literally "the part that covers") is the part of the inferior frontal gyrus that lies between the inferior precentral sulcus and the ascending ramus of the lateral sulcus. It is called opercularis because it covers part of the insula. The pars opercularis together with the pars triangularis form Broca's area.
Abnormal blood flow in the Pars opercularis has been shown to be an indicator for autism. Previous theories had tied autism to abnormalities in the cerebellum, due to the fascination with spinning exhibited by autistic children. 1