Citation, DOI, disclosures and article data
At the time the article was created Maciej Debowski had no recorded disclosures.View Maciej Debowski's current disclosures
At the time the article was last revised Craig Hacking had the following disclosures:
- Philips Australia, Paid speaker at Philips Spectral CT events (ongoing)
These were assessed during peer review and were determined to not be relevant to the changes that were made.View Craig Hacking's current disclosures
The circular sulcus, or peri-insular sulcus is a deep sulcus that surrounds the lateral surface of the insular cortex and separates it from the operculum of the frontal, temporal and parietal lobes. In this sulcus, the M2 segment of the middle cerebral artery (MCA) completes a downward turn at the superior and inferior limiting sulci of the insula and passes into the opercular compartment to become the M3 segment of the MCA.
The circular sulcus can more precisely be divided into four peri-insular sulci: anterior, inferior, superior, and posterior. The circular sulcus is contiguous with the lateral (Sylvian) sulcus forming part of the operculoinsular compartment of the Sylvian fissure3.
History and etymology
The circular sulcus is also known as the circular sulcus of Reil, named after German anatomist, physiologist and pioneer psychiatrist Johann Christian Reil (1759-1813) 7.