What exactly does the 7T magnetic resonance detector mean?

Laymen may not know it, but for insiders, the high resolution, high sensitivity and fast imaging characteristics of 7T allow them to obtain high-definition three-dimensional imaging of whole brain structures and functions.

"Its resolution can reach within 0.5 millimeters, which is five times that of ordinary MRI machines, and it is the most detailed brain image that humans can see without invasiveness and damage, which is also the key to understanding how the brain works in a normal state. ”

No matter what kind of person in the industry, he needs a high sense of identity, and although Professor John Medina has already achieved fame, and although Wen Yanyi is not interested in experimental data, and even regards these things as a flood beast, this 'evil doctor' still takes the trouble to explain.

"Ultra-high resolution actually has two meanings: one is the image dimension and the other is the time dimension. Human conscious activity is fleeting, and 7T can record neural network activity images accurate to milliseconds. ”

"And how neural networks work, simply put, is to look at how the neural columns of the various functions of the brain, a collection of multiple neurons with similar functions, actually work. ”

"Our senses of sight, hearing, touch, taste, joy, anger, sorrow, etc., are reflected in the brain, which are all kinds of nerve signals. These neural signals are a complex network of neural collaborations, and we have been studying what specific neural activities a sense corresponds to. And how do nerve cells communicate and collaborate with each other? ”

"A lot of brain or mental illness is actually some interruption of neural communication, or disease. ”

"Even if I look at the imaging of the brain area, I can see what the subject is doing. ”

Professor John Medina also took out a photo covered with black spots and told Brother Wen with a smug face:

"For example, this image was taken by me with the help of light imaging, and each small black dot is about 0.2 millimeters in diameter, which represents the activity of a neuron. It shows a monkey looking at a certain color, and only when the monkey is looking at a color will the cell area 'light up'. ”

"There are 14 billion cranial nerve cells in our human brains, and the communication between these cells is done through electrical signals. ”

"However, at present, human technology cannot directly obtain the activity trajectory of these electrical signals, so I thought of another way: neurons need to consume oxygen to communicate with each other, and oxygen is transported through the bloodstream, and we can indirectly know the communication status between neurological functional units by monitoring the changes in the size of the blood flow. ”

"How's that, awesome!"

Senior Brother Wen: "......"

Well, it's really powerful.

however

Who am I?

Where am I now?

What am I doing?

Looking at Professor Medina, who has been 'talking rhetorically', Senior Brother Wen really wants to knock open this guy's brain with an axe to study why his language center is so developed!

With a ticking alarm, the instrument began to run smoothly.

Finally, Professor Medina was 'silent', and he didn't bother to talk to Senior Brother Wen, and started to operate seriously.

So, Liu Feng, who was lying on the magnetic resonance detection instrument, suddenly felt a strong energy reaction scanning his brain.

Originally, it stands to reason that with the design principle of the instrument, even a strong magnetic field of up to 7T will not cause any damage to the human brain, and the human brain will not feel anything abnormal.

However, is Liu Feng an ordinary person?

At this moment, in the environment of a strong magnetic field, he felt that his brain suddenly had a thrill!

This state is like the feeling of over-brushing when he was brushing books!

Moreover, this feeling is something he has never experienced at all when he was tested on the magnetic resonance instrument of a domestic hospital before!

7T ultra-high magnetic field NMR instrument, effective!

I was overjoyed.

He endured the discomfort and began to concentrate,

The ability slowly mobilized and began to track the changes in the brain after the magnetic field.

however

More than ten minutes passed......

"I can't see any difference between these two pictures!"

Wen Yanyi took the two imaging pictures of herself and Liu Feng and carefully compared,

"It seems that this guy's IQ is not better than ours, but why can't we study the Great Unified Theory?"

Professor John Medina snatched the image from his hand and wiped it with a pained look on his face, before explaining: "Judging from the signal strength of the image, there is really not much difference in the intensity of brain activity between the two of you, and even your activity intensity is higher. ”

"And what does that mean?"

Senior Brother Wen was curious.

"This shows that you think a lot, and your mind is extremely complicated, and you are a thief and a thief with a bad heart!"

Liu Feng walked over with a slightly pale face, he felt like he wanted to sleep well now.

"Really?"

Senior Brother Wen smiled, looked at Liu Feng, who was a little tired, and was faintly a little complacent,

"Professor Medina, is this guy right?"

"Hehe!" Professor Medina smiled, "In a way, he is indeed right, judging from the images, your signal is indeed extremely strong, which shows that your brain is quite rich in thinking!"

"Haha, I'll just say it!"

Senior Brother Wen once again 'brushed' the imaging map, and while studying it carefully, he let out a smug smack,

"Doesn't this confirm from the side that our brains are more developed? Tsk, junior brother, look, with the intensity of your brain activity, it's like a 'retarded'!"

Liu Feng: "......"

MDZZ！

That's all you can come to that conclusion?

However, at this moment, he had no more energy to deal with this guy.

"Professor Medina, don't you know what's wrong with my brain?"

The printed image was snatched away by Wen Yanyi, and John Medina could only shake his head helplessly.

Returning to the computer, he called up Liu Feng's map.

Studied for a few minutes.

"Come and see. ”

beckoned to Liu Feng.

"From these images, the structure and activity areas of your brain and the intensity of activity in each part of your brain are similar to those of ordinary people. ”

Professor Medina sighed a little disappointed,

"I have to say, it's really a pity. I thought that the brains of geniuses should be more or less different from the brains of ordinary people, but now it seems that I have been overly concerned......"

"Is it true that a man can achieve as much as his brain? Einstein did it, and so did you, and even the brains of a dozen other dynamite award-winning people. ”

At this moment, John Medina seemed to be stunned,

muttering

"Why can't it be different!"

Seeing this, Liu Feng knew that the research of this 'evil doctor' seemed to have fallen into some kind of self-limiting bottleneck.

This kind of bottleneck is, from the perspective of Buddhism, a kind of cognitive obstacle, and from the perspective of modern psychology, it is a kind of self-protection of failure.

This abnormal state, for example, is that a person thinks about something that is extremely important to him, but the fact is something else entirely, and for a short period of time the person does not want to believe in the result, or even does not want to believe in the result all the time, then the person will appear in a state of demonic state.

That's where Professor Medina is now.

When Liu Feng was doing experiments before, he often encountered this kind of thing.

Disappointment and loss, failure and blow, are all common things!

Therefore, Professor John Medina's state of affairs, he is perfectly able to understand.

Liu Feng didn't bother him, and analyzed the atlas by himself;

This kind of thing can only be walked out by himself.

"No, maybe you're not like them!"

After a period of silence, Professor Medina suddenly stared at Liu Feng's forehead,

His eyes lit up and he muttered to himself,

"Yes, the results of the MRI don't mean anything, only after the autopsy can you find the gap between you and these people!

Liu Feng: "......"

Am I like a fool?

……