From some of the worksheets, I took away a strong understanding of gyri and sulci. The gyri (or gyrus) are referred to the wrinkles that cover the exterior of the brain. The sulci (sulcus) are the deep cracks in the brain, also called fissures. Like other parts of the body, such as the stomach rugae, the folds are for more surface area. To further my understanding, the article used a piece of crumpled paper as an example- If your brain was a sheet of paper, your brain would have to be much larger to encompass it if it were not crumpled. When you are born, your brain is smooth. Over time, the gyri and sulci grow.
Adolescence is a critical time of development in plasticity growth and vulnerability in the brain. Any change can positively or negatively impact the brain, thus making the brain more susceptible to physiological disorders like anxiety, depression, drug use and abuse. During this time, proliferation, pruning, myelination and the prefrontal cortex is at work. The prefrontal cortex is somewhat developed, but still immature, making teens known for more risky behavior and impulsive decisions. This is why we must continue studying on adolescent developmental plasticity to preserve neuroplasticity function.