Middle Frontal Gyrus Of The Brain

Description

Middle frontal gyrus (gyrus frontalis medius) occupies the dorsolateral surface of the frontal lobe between the superior frontal sulcus superiorly and the inferior frontal sulcus inferiorly. From an external lateral perspective of the cerebral hemisphere, the gyrus extends anteriorly toward the frontal pole and posteriorly approaches the precentral region, with its posterior limit commonly defined by the precentral sulcus and the anterior continuation of the central sulcus complex. Gyri and sulci are modeled with enough relief to separate the middle frontal gyrus from the superior frontal gyrus above and the inferior frontal gyrus below, situating it within the prefrontal cortex of the cerebrum. Surface anatomy is the focus. Clinically, the middle frontal gyrus is a common shorthand for dorsolateral prefrontal cortex (often overlapping Brodmann areas 9 and 46), a region linked to working memory, planning, attentional set shifting, and cognitive control that are frequently affected in traumatic brain injury, schizophrenia, and major depressive disorder. Localization matters because lesions in the MCA distribution, low grade gliomas, and metastases in lateral frontal cortex can produce dysexecutive syndromes without frank motor weakness when the precentral gyrus is spared. The fixed surface perspective helps correlate sulcal landmarks to surgical planning, neuronavigation, and noninvasive brain stimulation targets, where small errors in gyral identification can change which cortical network is engaged. Landmarks first. Use this illustration in neuroanatomy and neuroscience teaching to orient learners to frontal lobe gyri, in neurosurgical atlases discussing lateral frontal approaches, and in psychiatry or cognitive neurology texts linking prefrontal cortical anatomy to executive dysfunction and stimulation-based interventions. Anatomical accuracy verified by SciePro's Medical Advisory Board.