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
Forensic facial reconstruction researchers attempting to identify human remains of two Canadian Army soldiers lost in World War I. One soldier was identified through DNA analysis in 2007, but due to DNA deterioration, identifying the second using the same techniques failed. In 2011, the second of the soldiers' remains discovered at Avion, France were identified through a combination of 3-D printing software, reconstructive sculpture and use of isotopic analysis of bone. Forensic facial reconstruction Forensic facial reconstruction (or forensic facial approximation) is the process of recreating the face of an individual (whose identity is often not known) from their skeletal remains through an