What is Dorsolateral prefrontal cortex?
The dorsolateral prefrontal cortex (dlPFC) is a brain region central to working memory, cognitive flexibility, planning, and the inhibition of inappropriate responses. It is the neural hub of executive function.
How it works
The dlPFC maintains task-relevant information in working memory, applies rules and strategies, and exerts top-down control over behavior. It is one of the last brain regions to fully mature (not until the mid-20s), explaining why adolescents have poorer impulse control and planning abilities. Damage to the dlPFC impairs the ability to plan, maintain goals, resist impulses, and switch strategies. TMS stimulation of the dlPFC can temporarily improve or impair executive functions depending on the protocol.
Applied example
A chess player planning three moves ahead while resisting the temptation of an attractive but ultimately losing move is heavily relying on the dlPFC to maintain the plan in working memory and inhibit the impulsive response.
Why it matters
The dorsolateral prefrontal cortex is the brain’s executive: it enables humans to override impulses, plan ahead, and behave according to abstract rules rather than immediate rewards.
