Dr. Paul Ekman's research shows that humans have the capacity to recognize a suite of seven core emotions across cultures: sadness, fear, anger, surprise, disgust plus two expressions with ambiguous interpretation - contempt and joy. However it also appears we can read further into people’s faces – seeing beyond what is likely visible on surface level through subtle hints such as Darwin's sorrow muscle located between the eyebrows which gives away feelings like grief or distress without words being spoken aloud. By understanding these tell-tale signs in our body language including facial expressions we may be able to ‘get inside someone else’s head,' unearthing deeper more complex thoughts than those initially presented face value!
Anger, fear and happiness are all visible on the human face. When angry, a hard line may be drawn across our lips with furrowed brows from pressure around the inner corner of the eyebrows. Fear often makes us show more white in our eyes as well as a horizontal mouth-line while rising cheeks signal contentment - when happy, we smile up to our eyes!
Surprise, contempt and disgust are emotions that can be seen in facial expressions. Surprise often shows itself on the face with widened eyes or a dropped jaw while an expression of hate may include rolling eyes and asymmetrical lip curl. Feelings of revulsion might cause nose wrinkling as though to combat bad odors or lifting the top lip -- like you smelled something stinky!