Facial expression responsible for controlling the expression differ in each case. Voluntary facial expressions are often socially conditioned and follow a cortical route in the brain. Conversely, involuntary facial expressions are believed to be innate and follow a subcortical route in the brain. Facial recognition is often an emotional experience for the brain and the amygdala is highly involved in the recognition process. The eyes are often viewed as important features of facial expressions. Aspects such as blinking rate can possibly be used to indicate whether a person is nervous or whether he or she is lying. Also, eye contact is considered
Emerging adulthood and early adulthood of various disorders prevalent in emerging adulthood, but the chance of developing a disorder drastically decreases at age 28. Seventy-five percent of any lifetime DSM-IV anxiety, mood, impulse-control and substance abuse disorder begins before age 24. Most onsets at this age will not be, or become, comorbid. The median onset interquartile range of substance use disorders is 18–27, while the median onset age is 20. The median onset age of mood disorders is 25. Even disorders that begin earlier, like schizophrenia spectrum diagnoses, can reveal themselves within the age range of emerging adulthood. Often, patients will not seek help until