The expression of laughter depends on two partially independent neuronal pathways.
Some smiles are voluntary and smiling can be differentiated into 16 different expressions [ 24], but there is only one expression of laughter.
Concomitantly, recognize the universality of a person's natural inclination to an expression of laughter when feeling high and to that of tears when feeling low.
Facial expressions are important components of laughter and we use these expressions to transmit our intention to be friends with others.
(Watch the video: The line was met not with serious expressions of purpose, but with laughter, hoots and hollers). It had the same effect on that crowd as you could see in Trump's crowds when he would say "lock her up," or any other of his inanities that had value not because of their substance, but because they allowed people to revel in their shared contempt.
He, more than any of the other leaders, treated the audience to a giddy medley of facial expressions – smiles, laughter, grimaces, dancing eyebrows and displays of indignation.
Seated a few tables away from us magazine scribes, Trump's humiliation was as absolute, and as visible, as any I have ever seen: his head set in place, like a man in a pillory, he barely moved or altered his expression as wave after wave of laughter struck him.
Unlike the Superiority and Incongruity Theories, it explains the link between humor and the facial expression, body language, and sound of laughter.
Dr Platt works to understand what facial expressions are linked with feeling afraid of laughter.
"I live my life a quarter-mile at a time," he says evenly, with an expression that not only drew peals of laughter from the preview audience but also described the slow-motion plotting.
