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A smile is a facial expression formed primarily by flexing the muscles at the sides of the mouth. Some smiles include a contraction of the muscles at the corner of the eyes, an action known as a Duchenne smile. Among humans, a smile expresses delight, sociability, happiness, joy, or amusement.
The facial feedback hypothesis, rooted in the conjectures of Charles Darwin and William James, is that one's facial expression directly affects their emotional experience. . Specifically, physiological activation of the facial regions associated with certain emotions holds a direct effect on the elicitation of such emotional states, and the lack of or inhibition of facial activation will ...
The Positive and Negative Affect Schedule (PANAS) from 1988 is a 20-item questionnaire, using a five-point Likert scale (1 = very slightly or not at all, 5 = extremely) to assess the relation between personality traits and positive or negative affects at "this moment, today, the past few days, the past week, the past few weeks, the past year ...
“A smile has to be natural to get through to the other person, but for anyone who does not smile much, the brain forgets how to use the facial muscles,” she said.
The amygdala plays an important role in facial recognition. Functional imaging studies have found that when shown pictures of faces, there is a large increase in the activity of the amygdala. The amygdala receives visual information from the thalamus via the subcortical pathways. [6]
In a positive sense, "man uses the comical as a therapy against the restraining jacket of logic, morality and reason. He needs from time to time a harmless demotion from reason and hardship and in this sense laughter has a positive character for Nietzsche."
Positive mood has also been proven to show negative effects on cognition as well. According to the article "Positive mood is associated with implicit use of distraction", "There is also evidence that individuals in positive moods show disrupted performance, at least when distracting information is present". [ 8 ]
Humour (Commonwealth English) or humor (American English) is the tendency of experiences to provoke laughter and provide amusement.The term derives from the humoral medicine of the ancient Greeks, which taught that the balance of fluids in the human body, known as humours (Latin: humor, "body fluid"), controlled human health and emotion.