What is the purpose of the longitudinal fissure in the brain?

The longitudinal fissure serves the important function of separating the two hemispheres of the brain. This deep groove runs down the center of the brain, dividing it into the right and left hemispheres. Each hemisphere is associated with different functions and processes, which can operate somewhat independently. The presence of the longitudinal fissure allows for specialized functioning within each hemisphere, while also providing structural support to the brain's overall organization.

While connecting the two hemispheres might suggest communication between them, such connections occur via the corpus callosum and other commissures, not through the fissure itself. The functions described in forming an outer layer or sensory processing are not relevant to the role of the longitudinal fissure, which is strictly a structural feature that enhances the organization of the brain.