Pars orbitalis
Pars orbitalis is a part of the inferior frontal gyrus in the human brain. It is one of the three parts of the inferior frontal gyrus, the other two being the pars triangularis and the pars opercularis. The pars orbitalis is located in the frontal lobe, specifically in the Brodmann area 47.
Anatomy[edit | edit source]
The pars orbitalis is located at the base of the frontal lobe, above the orbit (eye socket), hence its name. It is bounded by the lateral sulcus (Sylvian fissure) on one side and the inferior frontal sulcus on the other. The pars orbitalis is separated from the pars triangularis by the ascending ramus of the lateral sulcus, and from the pars opercularis by the horizontal ramus of the lateral sulcus.
Function[edit | edit source]
The pars orbitalis is involved in various cognitive functions. It plays a role in language processing, particularly in the production of speech. It is also involved in decision making and social behavior. Damage to the pars orbitalis can result in aphasia, a language disorder that affects a person's ability to communicate.
Clinical significance[edit | edit source]
The pars orbitalis is often studied in relation to various neurological and psychiatric disorders. It has been implicated in schizophrenia, autism, and attention deficit hyperactivity disorder (ADHD). In addition, changes in the structure and function of the pars orbitalis have been observed in individuals with major depressive disorder and bipolar disorder.
See also[edit | edit source]
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Contributors: Prab R. Tumpati, MD
