Diagram of the Left Hemisphere Showing the Correlation of the Most Common Pattern of Central Lobe Arterial Supply to the Classic Homunculus on the Lateral Surface. The cortical areas supporting fine movements are disproportionally large in comparison with areas supporting more gross movements. Obliteration of a single arterial branch may lead to a motor or sensory deficit in a specific part of the body. (Image courtesy of AL Rhoton, Jr.)