Isthmus of cingulate gyrus

Isthmus of the cingulate gyrus is a part of the brain that connects the anterior cingulate and posterior cingulate. It is a component of the limbic system, which is involved in emotion formation and processing, learning, and memory. The isthmus of the cingulate gyrus is located in the medial and superior part of the brain, near the corpus callosum.

Etymology

The term "isthmus" is derived from the Greek word "isthmos", which means "narrow passage". The term "gyrus" is derived from the Greek word "gyros", which means "circle" or "ring". The term "cingulate" is derived from the Latin word "cingulum", which means "girdle" or "belt". Therefore, the term "isthmus of the cingulate gyrus" can be translated as "the narrow passage of the circular belt".

Anatomy

The isthmus of the cingulate gyrus is a small region of the brain that connects the anterior and posterior parts of the cingulate gyrus. It is located superior to the corpus callosum, a bundle of nerve fibers that connects the two hemispheres of the brain. The isthmus of the cingulate gyrus is part of the limbic system, a group of structures in the brain that are involved in emotion, learning, and memory.

Function

The isthmus of the cingulate gyrus is involved in several important functions of the brain. It plays a role in emotion formation and processing, learning, and memory. It is also involved in pain perception and regulation, and it has been implicated in several psychiatric disorders, including depression and anxiety.

Clinical significance

Abnormalities in the isthmus of the cingulate gyrus have been associated with several psychiatric disorders. For example, studies have found that people with depression and anxiety have alterations in the structure and function of the isthmus of the cingulate gyrus. In addition, research has suggested that the isthmus of the cingulate gyrus may play a role in the pathophysiology of schizophrenia and bipolar disorder.

See also

• Cingulate cortex
• Cingulate gyrus
• Limbic system

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  Gray's Anatomy illustration of the cingulate gyrus
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  Medial surface of cerebral cortex showing gyri
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  Isthmus of cingulate gyrus from DK Atlas