The difference between fake smile and real smile

The difference between real smile and fake smile

We call Duchenne's smile genuine and Pan Am's smile fake. As the saying goes, really can't be fake, really can't be fake. The key to distinguish true smile from fake smile lies in the eyes, not in the mouth. The difference between Du Xing smile and Pan American smile is as follows:

A real smile will narrow your eyes, but a fake smile won't. Du Xing said: "The zygomatic muscles are controlled by will, while the orbicularis oculi muscles are only controlled by inner emotions. A false smile can't make it shrink. "

When people really laugh, the subconscious will think that the surrounding environment is safe, so they will squint. When people squint, their eyesight becomes smaller, and the light entering their eyes decreases, so people can't observe the surrounding environment well. Imagine you are in a dark environment. Although you can't see at this time, you will definitely keep your eyes open, because you will try your best to observe the environment and you will never close your eyes. When giggling, the subconscious feels that the surrounding environment is not safe enough, even threatening. So people don't squint.

When you really laugh, your eyes will squint to varying degrees. When you smile slightly, your eyes are slightly closed and spindle-shaped. Some people have crow's feet in their eyes at this time. When you really laugh to a moderate degree, the upper eyelid relaxes, the eyelids overlap and pile up, the lower eyelid is pushed up by facial muscles to present a horizontal position, the whole eye presents a semicircle, and most people have crow's feet in the corner of their eyes, which is a very deliberate camouflage posture; When you really laugh badly, your eyes will narrow into a line, and even your lower eyelid will bow backwards, showing an upward bow, and crow's feet are very obvious.

There will be crow's feet in real laughter, but not in fake laughter. When you really laugh, the orbicularis oculi muscle contracts, and wrinkles similar to those on the fish's tail can appear between the corner of the eye and the sideburns, which is called crow's feet. Children and young people have good skin elasticity and usually have no crow's feet when they really laugh. People over the age of 30 really laugh and crow's feet are more obvious. Middle-aged and elderly people can also have crow's feet under a calm expression, but crow's feet are more obvious when they really laugh.

Fat people have a lot of meat on their faces. When they smirk, the muscles around their eyes will squeeze each other and form wrinkles. This wrinkle is not a radial crow's feet caused by contraction of orbicularis oculi muscle, but an irregular wrinkle caused by muscle crowding.

When you really laugh, your mouth and eyes are out of sync. A sincere smile starts from the corners of the mouth and then drives the eyes. If your mouth and eyes move at the same time when you laugh, it is a typical fake smile.

When you smile sincerely, your muscles move like this: the corners of your mouth first expand to both sides and then lift up. Muscles involved in mouth movements include levator labialis, orbicularis oris, zygomatic muscle, zygomatic muscle, smiling muscle and buccal muscle. When the tendons from the labial groove and levator labialis muscle contract, the upper lip is pulled upward and backward to the nasolabial groove (the groove from both sides of the nose to the corner of the mouth). When the upper lip meets the resistance of a large amount of buccal fat in nasolabial groove, most zygomatic muscles and levator labialis muscles contract, further lifting nasolabial groove and cheeks. Then the orbicularis oculi muscles around the eyes contract, which makes the eyes squint and crow's feet appear in the corners of the eyes.