What's so wonderful about the brain?

There are many mysteries in the brain, which has always been an important field for scientists to study unremittingly. In the known field, the brain has 10 magical mysteries.

1. Scratch yourself if you don't laugh. When someone tickles, even if it is known in advance, the cerebellum will not send out a warning signal, and the brain will react to external stimuli, and people will feel particularly itchy, which is also an instinctive reaction of people. When you scratch yourself, the cerebellum sends a signal telling the rest of the brain not to react to it.

Two bananas are enough for one day. Research shows that the brain consumes less energy than a refrigerator lighting, and two big bananas can support it. However, the brain consumes a lot of energy when it is active. For example, the brain only accounts for 3% of the body weight, but consumes 1/6 of the total energy of the human body.

3. The brain is good at memorizing sequences. People often need to remember some sequential things in their lives, such as the exit number of the expressway. This is the brain's response to our basic life skills.

4. The brain has a "joke center". The frontal lobe in front of the brain is the "joke center" of the brain. After hearing jokes, the frontal lobe of the brain will be more active, and its activity is obviously related to the ridiculous degree of jokes. After evaluating the funny degree of the joke, the brain sends out instructions to laugh or not to laugh.

5. Frequent jet lag hurts memory. Frequent jet lag causes the brain to release stress hormones, which will affect the parietal lobe of the brain, thus damaging memory. In addition, shift work will bring similar risks, and frequent changes in working hours will have adverse effects on the body and brain.

6. Incoming calls cannot be heard clearly in the noise background. When talking on a mobile phone in a noisy environment, the noise will enter the microphone of the mobile phone and mix with the voice of the other party through the circuit of the mobile phone. Because these sounds are very similar and mixed together, it is difficult for the brain to distinguish. At this point, if you cover the microphone, the effect will be much better.

7. High altitude makes people hallucinate. When you first go to high altitude areas, some people will have visual hallucinations and even sudden emotional changes. Scientists believe that this is just a kind of altitude sickness. Due to lack of oxygen, the areas of the brain that control visual, auditory and even emotional activities are affected, resulting in various hallucinations.

8. Playing gun games can exercise your brain. When playing a gunfight, you must kill as many enemies as possible before they hit you. This game requires you to allocate your attention effectively on the screen, and your brain is in a state of continuous and efficient processing of multiple tasks.

9. Sneezing under the light is because the brain is misled. Usually, when the nasal cavity is stimulated by foreign bodies, people sneeze, thus expelling foreign bodies entering the nasal cavity. This sneezing reaction is controlled by laterally extending brain regions in the brain. Because the sense of eyes and nose is dominated by the same trigeminal nerve, when strong sunlight enters the eyes, the relevant areas in the brain are often mistaken for the stimulation of the nose, so they want to sneeze out the foreign body.

10. yawning wakes up the brain. People often yawn when they are sleepy, but after yawning, they will find that their brains will be clearer. This is because yawning can dilate the respiratory tract, make the lungs inhale more air, and increase the oxygen carrying capacity of blood, so that the brain can supply more oxygen and people will feel more awake.