Anatomical Location Of The Brodmann Areas

Description

Brodmann areas are mapped across the cerebral cortex of each hemisphere, following the contours of major gyri and sulci rather than arbitrary surface regions. Primary motor cortex (area 4) occupies the precentral gyrus anterior to the central sulcus, while primary somatosensory cortex (areas 3, 1, 2) lies immediately posterior on the postcentral gyrus. Inferior to these landmarks, the lateral sulcus (Sylvian fissure) frames the perisylvian cortex, including inferior frontal gyrus areas 44 and 45 and the posterior superior temporal gyrus area 22. Posteriorly, occipital cortex areas 17, 18, and 19 cluster around the calcarine region and adjacent visual association cortex. Cortical parcellation by Brodmann remains a daily reference point for correlating focal deficits with lesion location, from middle cerebral artery infarcts affecting language-dominant perisylvian cortex to focal seizures arising near the motor strip. This illustration is useful because it ties numeric areas directly to sulci and gyri that clinicians and students already use as surface landmarks, making it easier to translate a radiology report or operative note into functional implications without switching nomenclatures midstream. Orientation by fixed cortical folds also supports teaching the limits of oversimplified localization, for example when expressive aphasia extends beyond areas 44 and 45 into adjacent premotor and insular regions, depending on vascular territory. Neuroanatomy and neuropsychology courses can drop this illustration into lectures on cortical function, while neurology and neurosurgery texts can pair it with stroke syndromes, epilepsy localization, tumor mapping, and preoperative planning discussions. It also reads well beside EEG and fMRI summaries when you need a standardized cortical reference. Anatomical accuracy verified by SciePro's Medical Advisory Board.