When the team member shakes his head and raises his eyebrow, is an example of facial expression. Facial expressions boost understanding. it can also indicate excitement or shock. for instance, the raising of eye brows might communicate that the team member is suprised or that he dont believe what He is hearing.
There are different interpretations that are assigned to facial expressions so one has to be careful when using facial expressions.
Facial expression are form of non verbal communication. primarily used to convey social informations between humans. it can also occur in mammals and some other animals.
