The autonomic nervous system has the ability to spontaneously restore muscle function following nerve injury.
A new study looks at how people with unilateral facial paralysis find it difficult to correctly perceive the expression on the faces of others.
A new study reports people with facial paralysis are often perceived by others as being less happy simply because they are unable to express emotion with their faces.
Researchers describe how people in social situations simulate others' facial expressions to create emotional responses in themselves.
