13 human reflexes that amaze scientists

How complicated a person is. Take even our reflexes: they were given to us by nature in order to simplify life, but in practice this often leads to the opposite. Not to mention the purpose of reflexes. For example, where do the legs of curiosity grow from, what laziness protects us from, why do we want to write in our souls and how do we manage to infect other people with our emotions?

All children swim underwater with their mouths open.

Any baby under the age of 3-6 months, falling into the water, reflexively holds his breath and begins to move. If at the same time water gets into his mouth, then the glottis and epiglottis narrow, preventing fluid from entering the lungs. Children over 6 months of age lose these skills and are forced to learn to swim from scratch if they have not mastered this activity from birth.

Important: It is not recommended to teach a newborn child to swim independently (even relying on reflexes), it is better to do this under the supervision of a professional.

The composition of tears automatically changes depending on what they are caused

If we are talking about lacrimation, then the composition of tears can be different. In one case, it is a protein-rich antibacterial fluid that maintains eye moisture during blinking or when sitting at a computer for a long time. In the second case, the tears have a slightly different composition and stand out in response to an external stimulus: for example, you cut an onion, an eyelash gets in your eye or there is a lot of smoke around you that causes tears.

When we cry because of emotional excitement, our tears contain special hormones that help the body survive stress faster and reduce pain.

Laziness is a protective mechanism invented by nature

Reflex of resistance (freedom) is a reaction to any external stimulus that limits us in anything. It is known that, unlike other reflexes, the longer we feel these limitations, the stronger our desire to get rid of them. At the same time, addiction to them does not arise.

Given this, a number of scientists argue that laziness is not a vice or a bad habit, but one of the methods of internal boycott, when the body tries to protect itself from the stressful situation that limits its free existence in anything.

If you spend a lot of time in the dark, your eyes will begin to see unusual clots of light

This reflex is familiar to astronauts and lovers of meditation practices, and it is called “movie for the prisoner.” According to scientists, flashes of light, which can change colors and take on different forms, arise in the dark due to intense psychological conditions, strong magnetic fields, chemicals or due to mechanical effects on the eyes. No magic!

Curiosity is an automatic function that increases a person’s chances of living happily ever after.

Curiosity is a manifestation of an orienting reflex: our bodies constantly receive information about the world around us, and the brain carefully compares the new data with the information that it received a second ago. As soon as a significant difference is revealed, an indicative reflex starts: we turn towards an unfamiliar sound or focus our eyes on something new.

An indicative reflex lies at the heart of behavior that forces us to constantly learn new things, for which the brain rewards us and ourselves with a sense of joy, which develops curiosity.

By the way, neuroscientists note that especially curious people, who even learn advanced skills and develop horizons in old age, live longer and happier, because they constantly “rejuvenate” the brain with the hormone of joy.

Incomplete action reloads the brain, introducing it into a state close to meditation

Performing monotonous, routine work, the brain is turned off, but “out of the corner of the eye” continues to monitor the process. If the action performed is incomplete, the brain for a while enters a state close to meditation: it seems to reboot, removing all unnecessary thoughts and trying to understand what task needs to be completed. At the same time, new tasks appear, but the brain is not able to concentrate on them to the end.

Example: You have a disturbing feeling that you have forgotten something. You cannot focus on your actions. As a result, you find that you did not close the front door, although you do not remember the moment you entered the house while talking on the phone.

Memories of the pot make you write in the shower

If you hear the sound of flowing water or a stream, many people have a desire to “look into the toilet.” Scientists consider this a manifestation of a reflex acquired in childhood: sitting on a pot or on the toilet, the child remembers the sounds characteristic of this process, including the sounds of washing off water and washing hands. And in the soul, the desire to meet a small need is exacerbated by warm water.

The heartbeat slows as soon as a person dips his face in cool water

The thing is in the so-called diving reflex of mammals: as soon as the surface of the face comes into contact with cold water (below 10 degrees), the body goes into a different mode of energy consumption. So it increases resistance to pressure and reduces oxygen consumption, believing that a person is preparing to dive to a depth: pulse slows, body temperature drops, blood vessels narrow, blood outflows to the center and vital organs, hemoglobin level rises, and blood is saturated with oxygen.

By the way, a sharp immersion of the face in cold water is an effective method in order to stop tachycardia in 1 minute or to reduce headache with migraines.

Due to stress, the brain loses control over the pupils.

Pupil movements and twitching of the eyes can be caused by fatigue, lack of sleep, excessive use of caffeine or medications. The basis is the manifestation of the vestibulo-ocular reflex, when the brain tries to get an accurate picture of what is happening, but cannot concentrate due to overload or overexcitation.

How to check: If you ride on a carousel or circle, for example, in an office chair for a couple of minutes, then immediately after stopping, your pupils will shake for some time.

The man blushes to confuse the interlocutor

It is believed that redness from embarrassment is part of the “fight or flight” defense mechanism. Before this, an adrenaline rush occurs in response to any stimulus: the pupils expand, the heart beats faster, and oxygenated blood flows through the dilated vessels to the muscles. The process affects the entire body, but redness is most noticeable in the neck, ears, upper chest and face.

Science claims that such a feature is peculiar only to people and is a means of expressing regret or repentance, so redness can be considered as a social instinct. Seeing that the interlocutor blushed, in response to this, we temporarily fall into a stupor, trying to rethink the situation and the role of the interlocutor in it. And those who blushed after showing their clumsiness, and do like us more than those who maintain an even complexion in any situation.

Goosebumps and chills – this is a signal of a sharp change in emotions

Once upon a time, this was only a reaction to a sharp change in temperature: with the help of raised hairs, the body held a layer of warm air around the skin or, on the contrary, covered later to cool slightly. For an unknown reason, the reflex began to work even with a sharp change in mood: when something scares us, we feel chills, and goosebumps run from our pleasant music.

Interesting: On the Reddit website, users collect materials that cause pleasant sensations and goosebumps. For example, listen to the very beginning of a work by Hans Zimmer: a change in volume and unusual harmonies may make you feel something similar.

The brain is “infected” by other people’s emotions, taking them for their own

Take a closer look at young children: when a parent is sad, the child notices this and begins to cry, although he does not understand the reason for the sadness. It’s all about emotional infection. That is why we are so attracted to people who feel joy: even without having our own reason for this emotion at the moment, we unconsciously seek to adopt it from another person, so we try to be with him.

By the way, the ability to convey moods and emotions to each other is innate, without which it would also be impossible to imagine such people’s involvement in religion or war.

A look at the sun causes a sneeze

This is how a light sneezing reflex manifests itself: every fourth person, looking at a bright light or the sun, suddenly begins to sneeze. Scientists have not yet been able to establish why this is necessary, but it is known that a similar feature is inherited.