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 type of face a person "may" have exhibited because of artistic subjectivity. The position and general shape of the main facial features are mostly accurate because they are greatly determined by the skull. In recent years, the presence of forensic facial reconstructions in the entertainment industry and the media has increased. The way the fictional criminal investigators and forensic anthropologists utilize forensics and facial reconstructions are, however, often misrepresented (an influence known as the "CSI effect"). For example, the fictional forensic investigators will often call for the creation of a facial reconstruction as soon as a set of skeletal remains