According to the reading, we use facial expressions, tone, and body language, including motions and movements, to express emotion.
One or more motions or positions of the muscles beneath the skin of the face constitute a facial expression. According to one controversial theory, these movements convey an individual's emotional state to observers. Nonverbal communication includes facial expressions.
Happiness, surprise, contempt, sadness, fear, disgust, and anger are all examples of facial expressions that reveal a person's mood. A technology known as Facial Emotion Recognition (FER) studies static images and videos of people's faces to determine their emotional states.
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