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Do you know that inside each one of us， there is a most marvelous and complicated object in the universe， and can you guess what is that？ Our brain. Today， I’d like to take u guys to start a discovery into the vast landscape of the brain. But since it’s far too mysterious in here to be introduced in detail， I am only going to pick several specific questions to illustrate some interesting facts to you.
Initially， we ought to know some very basic structures and concepts related to brains. But if you don’t have any interest in brains， you can just take my next 2 minutes as nonsense， you can also keep up with me later. （Central core： basic breath，heartbeat，movement，sleep and balance. limbic system： behavior，emotions，memories and also blood pressure and temperature. cerebral cortex： higher recognition and emotion management ） We can see all those nerves are in charge of various functions.
Now， let’s start our main part and raise the first question： Do I only use 10% of my brain？ Well， according to Aristotle you don’t really use it at all， he thought it’s a radiator to keep people calm and cool. In fact， even though your brain is only 2% of your body weight， this machine uses nearly a quarter of your whole energy. But we still need the machine for reason， that’s why we have developed such a huge brain compared to animals， so we are definitely not gonna get this huge and complicated brains and leave 90% of it not working—it’s like buying a tank or helicopter only to pick up your children at school. Therefore， it’s just like an encouraging saying to help yourself to use your brain more and study more， but you cannot deny the truth that you use your brain as a whole and with every part of it. And even though you are doing absolutely nothing， your brain is still working hard， there is a whole set of areas is dedicated to doing nothing.
The second question is quite interesting to talk about： why humans usually tend to fall in love in spring？ Well， not like any other species， humans don’t have breeding season， but it seems to be that we are more likely to fall in love in certain time. To get to discuss it further， we should firstly know a magic thing— dopamine. Dopamine plays the role as a neurotransmitter， which means it passes on message from one neuron to another. And its main function is called rewarding， which is a complex system to make you feel the pleasure. Now， the first reason should be the change of daylight， which straightly has an impact on your brain， which further controls the producing of epiphysin， thyroxin and vitamin D， to remind you it’s your strongest and most dynamic time in a year. Even male’s sperm quality reaches a high level because of daylight. The second reason is freshness， since the abundance of color， scent and sound in spring， we are stimulated to produce much more dopamine to pleasure us， therefore we are relaxed， as well as a little addicted to this kind of pleasure. And this addiction， is also called romance. Then because we human are too stupid to distinguish the good feelings made by light and adventure from those feelings made by love， we will feel like， it’s just the time to love someone naturally. The last question is about dreaming. I don’t know if u have ever noticed that in every one of your dream...you can only have sight and hearing， and no matter what crazy things you do in your dream， you can neither feel pain nor smell anything？ The first thing we need to know is that all of your dreams are coming from your memories. And talking about storing memories， we have to rely on a little famous part in our brain—hippocampus.
After we receive message from the outside， we form a temporary memory， which lasts very short time. And these short memories are stored in the hippocampus， which also has the ability to decide whether this message should be turned into long-term nerves or should be abandoned. Also this is where our dreams come from， we do not imagine our dreams， instead we get the information from there and re-organize it. Therefore， those parts which are more associated with the hippocampus are more likely to be felt and stored in it.
This is a picture of visual function parts in the brain， it’s quite a lot and some are even in the place with the hippocampus. Hearing parts as well. However， our smell is only felt by a little bulb， and it’s quite isolated from the other parts of brain. And that is the reason. Another social theory about this is that humans are evolved to be so， because when we are primitive people， we need to pay attention to the outside attack when we are asleep， and smell and feeling are the best tools. So to avoid us mixing up the smell and feeling in reality with the smell in the dream， we are evolved to smell nothing in dreams.
Seriously there’s much more interesting facts in human brains， and neuroscience is extremely important to everyone. If I have a chance to study in the US since grade 1， I will choose to learn neuroscience or neuromedicine. But since I was born in China， neuroscience is commonly considered as a future subject， which cannot be widely used in industries， I can merely make it a hobby at leisure.
Initially， we ought to know some very basic structures and concepts related to brains. But if you don’t have any interest in brains， you can just take my next 2 minutes as nonsense， you can also keep up with me later. （Central core： basic breath，heartbeat，movement，sleep and balance. limbic system： behavior，emotions，memories and also blood pressure and temperature. cerebral cortex： higher recognition and emotion management ） We can see all those nerves are in charge of various functions.
Now， let’s start our main part and raise the first question： Do I only use 10% of my brain？ Well， according to Aristotle you don’t really use it at all， he thought it’s a radiator to keep people calm and cool. In fact， even though your brain is only 2% of your body weight， this machine uses nearly a quarter of your whole energy. But we still need the machine for reason， that’s why we have developed such a huge brain compared to animals， so we are definitely not gonna get this huge and complicated brains and leave 90% of it not working—it’s like buying a tank or helicopter only to pick up your children at school. Therefore， it’s just like an encouraging saying to help yourself to use your brain more and study more， but you cannot deny the truth that you use your brain as a whole and with every part of it. And even though you are doing absolutely nothing， your brain is still working hard， there is a whole set of areas is dedicated to doing nothing.
The second question is quite interesting to talk about： why humans usually tend to fall in love in spring？ Well， not like any other species， humans don’t have breeding season， but it seems to be that we are more likely to fall in love in certain time. To get to discuss it further， we should firstly know a magic thing— dopamine. Dopamine plays the role as a neurotransmitter， which means it passes on message from one neuron to another. And its main function is called rewarding， which is a complex system to make you feel the pleasure. Now， the first reason should be the change of daylight， which straightly has an impact on your brain， which further controls the producing of epiphysin， thyroxin and vitamin D， to remind you it’s your strongest and most dynamic time in a year. Even male’s sperm quality reaches a high level because of daylight. The second reason is freshness， since the abundance of color， scent and sound in spring， we are stimulated to produce much more dopamine to pleasure us， therefore we are relaxed， as well as a little addicted to this kind of pleasure. And this addiction， is also called romance. Then because we human are too stupid to distinguish the good feelings made by light and adventure from those feelings made by love， we will feel like， it’s just the time to love someone naturally. The last question is about dreaming. I don’t know if u have ever noticed that in every one of your dream...you can only have sight and hearing， and no matter what crazy things you do in your dream， you can neither feel pain nor smell anything？ The first thing we need to know is that all of your dreams are coming from your memories. And talking about storing memories， we have to rely on a little famous part in our brain—hippocampus.
After we receive message from the outside， we form a temporary memory， which lasts very short time. And these short memories are stored in the hippocampus， which also has the ability to decide whether this message should be turned into long-term nerves or should be abandoned. Also this is where our dreams come from， we do not imagine our dreams， instead we get the information from there and re-organize it. Therefore， those parts which are more associated with the hippocampus are more likely to be felt and stored in it.
This is a picture of visual function parts in the brain， it’s quite a lot and some are even in the place with the hippocampus. Hearing parts as well. However， our smell is only felt by a little bulb， and it’s quite isolated from the other parts of brain. And that is the reason. Another social theory about this is that humans are evolved to be so， because when we are primitive people， we need to pay attention to the outside attack when we are asleep， and smell and feeling are the best tools. So to avoid us mixing up the smell and feeling in reality with the smell in the dream， we are evolved to smell nothing in dreams.
Seriously there’s much more interesting facts in human brains， and neuroscience is extremely important to everyone. If I have a chance to study in the US since grade 1， I will choose to learn neuroscience or neuromedicine. But since I was born in China， neuroscience is commonly considered as a future subject， which cannot be widely used in industries， I can merely make it a hobby at leisure.