Posterior cingulate cortex

Posterior Cingulate Cortex

The Posterior cingulate cortex (PCC) is a part of the brain located in the cingulate cortex. It is involved in various cognitive functions, including memory and attention, and is considered a key component of the default mode network (DMN).

Anatomy

The posterior cingulate cortex is located in the medial part of the brain, towards the back. It is part of the larger cingulate cortex, which also includes the anterior cingulate cortex (ACC). The PCC and ACC are separated by the cingulate sulcus, a deep groove in the brain's surface.

Function

The PCC is involved in a variety of cognitive functions. It plays a role in memory retrieval, particularly autobiographical memory, and is also involved in visuospatial processing and attention. The PCC is also a key component of the default mode network, a network of brain regions that are active when the individual is not focused on the outside world and the brain is at wakeful rest.

Clinical significance

Alterations in the PCC have been associated with several neurological and psychiatric disorders. For example, decreased activity in the PCC has been observed in Alzheimer's disease, and increased activity has been associated with schizophrenia. The PCC is also a target for deep brain stimulation in treatment-resistant depression.

Research

Research on the PCC is ongoing, with studies investigating its role in various cognitive functions and its involvement in different disorders. For example, research is being conducted on the PCC's role in consciousness and its potential as a target for treating psychiatric disorders.

See also

• Cingulate cortex
• Anterior cingulate cortex
• Default mode network
• Deep brain stimulation

References

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  MRI of the posterior cingulate cortex
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  Brodmann areas in the brain