The Anatomy Of The Central Sulcus Of The Human Brain

Description

Running obliquely from the superomedial margin toward the lateral sulcus, the central sulcus (sulcus centralis, fissure of Rolando) forms a deep cortical groove between the frontal and parietal lobes. Along its anterior bank sits the precentral gyrus (primary motor cortex), and along its posterior bank the postcentral gyrus (primary somatosensory cortex), with the sulcus acting as the key border between these functionally distinct fields. The animation tracks the sulcus across the convexity and onto the medial surface, where it approaches the paracentral lobule and clarifies how the precentral and postcentral gyri continue around the interhemispheric fissure. Orientation cues reinforce anterior versus posterior cortex as the camera advances along the sulcal depth. For neurology and neurosurgery, localizing the central sulcus separates motor from sensory cortex when planning resections near the perirolandic region, where postoperative paresis or cortical sensory loss is an ever-present risk. The sequential motion helps viewers distinguish the central sulcus from the adjacent precentral and postcentral sulci, a common source of error on surface anatomy, MRI correlation, and intraoperative navigation. Watching the border unfold along the hemisphere also makes the somatotopic transition more intuitive, with the lower-limb representation nearer the superior medial surface and the face and hand region more lateral. Use this animation in neuroanatomy and neurophysiology teaching to anchor Brodmann area 4 and areas 3, 1, and 2 to a single, dependable landmark, and in radiology training when orienting axial and sagittal sequences to the perirolandic cortex. It also fits operative briefings for tumor, cavernoma, or epilepsy surgery adjacent to the rolandic cortex, where rapid, shared localization improves team communication. Anatomical accuracy verified by SciePro's Medical Advisory Board.