Complex sentence: Dorsolateral Prefrontal Cortex (DL-PFC) is one of the most evolved parts of the human brain and undergoes an extremely prolonged period of maturation until adulthood.
Split into simpler sentences: Dorsolateral Prefrontal Cortex (DL-PFC) is one of the most evolved parts of the human brain. It undergoes an extremely prolonged period of maturation and is not fully mature until adulthood.