Dorsolateral prefrontal cortex–subgenual anterior cingulate cortex circuit (DLPFC–sgACC circuit)

The **dorsolateral prefrontal cortex–subgenual anterior cingulate cortex (DLPFC–sgACC) circuit** refers to the functional and anatomical connections between two key regions of the human brain. The **dorsolateral prefrontal cortex** is involved primarily in executive functions such as working memory, cognitive flexibility, planning, inhibition, and abstract reasoning. The **subgenual anterior cingulate cortex**, part of Brodmann area 25 within the ventral portion of the ACC, plays a central role in emotion processing and mood regulation. Aberrant connectivity within this fronto-limbic network has been strongly implicated in major depressive disorder and other psychiatric conditions. Recent research demonstrates that non-invasive brain stimulation techniques—such as repetitive transcranial magnetic stimulation (rTMS) or theta-burst stimulation applied over left DLPFC—can induce acute and persistent changes within sgACC microcircuits. These interventions modulate effective connectivity between these regions; for example, TBS can cause sustained inhibition within left sgACC microcircuits characterized by increased self-inhibition of specific neuronal populations. The degree of modulation correlates with clinical improvement for patients undergoing treatment for depression. This "target" is best described as a *neural network or functional pathway*, not a discrete molecular entity like an enzyme or receptor. Therefore it does not fit standard drug-target classification schemas but is highly relevant for device-based therapeutic strategies aimed at treating mood disorders through targeted neuromodulation.

Other names

DLPFC–sgACC pathwayDorsolateral prefrontal cortex to subgenual anterior cingulate connectivityPrefrontal-cingulate circuit

*For neuromodulation therapies targeting this circuit*: - Modulation of effective connectivity between the dorsolateral prefrontal cortex and subgenual anterior cingulate cortex via non-invasive brain stimulation (e.g., TMS/TBS), leading to changes in network activity associated with antidepressant effects.