I can extract side effects

"Dali, can my answer clear up your doubts?"

After Chen Yiqing explained the algorithm, he looked at Wang Dali expectantly.

"Brilliant! This is really a brilliant real-time algorithm that perfectly answers my question."

Wang Dali looked eager to study, and he was full of praise: "Sure enough, the final answer to any question is inseparable from mathematics. It's a pity that my math grades were mediocre, otherwise I should have become a mathematician."

Zhang Li asked curiously: "Wang Gong, what major did you study then?"

"I majored in Mechatronics, but I wasn't originally a scientific researcher. My strength lies in my hands-on ability. I prefer to tinker with messy things, so I went to become a hardware engineer after graduation."

"After more than ten years of hard work in this industry, I finally found my place in Sanqing."

Wang Dali recalled the days he had walked all the way after graduating from university, and he couldn't help feeling a lot of emotion.

"Although I can't be a scientist like you, it can be regarded as a contribution to the engineering world."

Zhang Li smiled and said: "According to your current achievements, you are also a craftsman of a great country, worthy of our admiration."

When Wang Dali was praised so much by her, he was immediately flattered and said a few words of humility.

Wen Renlong asked suddenly: "You are an undergraduate student who can come up with such a big project as an artificial heart. It's amazing. Now you are the chief engineer of Sanqing Instruments. Your school must recognize an outstanding alumni or something."

Wang Dali shook his head: "Our school has too many outstanding alumni, I am nothing."

Wen Renlong asked curiously, "Which school are you from?"

"Zhejiang University."

Wen Renlong nodded: "Zhejiang University is still very strong in this major, no wonder you are so good."

Wang Dali chuckled, with a happy expression on his face, as if caught in memories.

"I studied everything in this major, including mechanics, electronics, and programming. Every day, the courses were very full. I also had to study computers and electromagnetism as electives. In short, I was really wandering in the ocean of knowledge. Li, you are so dedicated to learning."

"At that time, there were many experimental classes, and after each class, I could find the teacher to use in the laboratory, not to mention how happy I was."

"The greatest achievement in my life is when I was studying, relying on my strong hands-on ability, I captured the favor of my wife among a group of bachelors. She is the only girl in the class. She is also beautiful. She is the goddess that everyone is looking forward to, but it's a pity that she learned the theory well but her hands are poor, so she fell in love with me."

"We were in pairs every day, either studying in the library or DIYing in the laboratory. I don't know how many single dogs I envy, hehehe."

Wen Renlong's expression of envy and hatred instantly turned into infinite remorse.

"Nimma, why didn't I find a female classmate when I was studying, the sisters of Beijing University are famous for being so beautiful."

"No, after the meeting, I have to look for the school girls from back then to see if there are any single or divorced ones."

In Zhang Li's eyes, the stars are shining all over the sky: "Wow, it's so romantic, campus love, growing old hand in hand, is simply the most beautiful thing in the world."

Wang Dali scratched his head in embarrassment: "I just don't dare to go to the class reunion now, for fear of being beaten up by the other 40 people in the class."

"Ahem," Chen Yiqing saw that the topic was about to go off track again, so he quickly cleared his throat and said.

"Come back to business, as long as the algorithm can keep up with the changes in the data, the computer in the laboratory will send the movement control signal of the monkey's brain to the mechanical arm in the next room."

"The experiment was very successful, and the robotic arm moved. In this way, we have these two motion trajectories."

With a swipe, two bright lines appeared on the screen.

"The red line above is the movement of the monkey's own arm when it is playing the game."

"The blue line below is the brain-computer interface controlling the movements of the robotic arm."

"The trajectories of these two lines are basically the same, and they overlap directly."

"It means that after connecting to the brain-computer interface, the mechanical arm can make exactly the same movements as the monkey's own arm."

"But I'm not going to play the video this time. I'll take you there in a while and see for yourself how monkeys use their consciousness to play games."

"Okay, that's all we've got so far."

Chen Yiqing looked around, then his face became serious, and he said seriously.

"Next, it's the main event."

"First of all, we need to improve electrode materials to solve the problem of large-scale acquisition of bioelectrical signals."

"When the microelectrodes are placed in the blood vessels of the brain, the neuroelectric signals that can be collected are definitely not as accurate as the neurons in the cerebral cortex. We need to improve the accuracy of the collection as much as possible."

"At the same time, the new microelectrode arrays will be made in the form of neurovascular stents, so that they can be placed in the blood vessels of the brain."

A map of the brain's veins and blood vessels appeared on the screen again.

A red laser dot stays on top of the brain.

"For blood vessel implantation in the brain, we have two options, one is arterial blood vessels and the other is venous blood vessels."

"Here is the middle cerebral artery, which is responsible for the blood supply to the part of the frontal lobe, as well as the lateral aspect of the parietal lobe, which controls the main motor and sensory functions of the face, throat, hands and arms."

"In addition to medium arteries, we can also choose cerebral veins. Thrombosis occurs in venous vessels, and the probability of vessel rupture is much lower than that of arterial vessels."

"It's just that, in this way, it will be very difficult for us to implant microelectrodes, which is much more difficult than simply placing them in the cerebral cortex."

"The advantage is that after the stent is stretched, it can be firmly fixed on the blood vessel wall, and can be placed for a long time, or even permanently implanted, without causing inflammation or damage to the cerebral cortex."

"The application of vascular stents has been proven for a long time, and it is gentler and safer than the craniotomy implantation method."

Speaking of this, Chen Yiqing looked at Wang Dali: "Dali is in charge of the support, I will send you the detailed parameters and the data of the microelectrode currently used, and then make an appointment every week to follow up on this Partial work."

Seeing Wang Dali nodding, he moved his eyes again to look at Zhang Li.

"When the microelectrode is placed in the blood vessel, the collected nerve signals will be more numerous and chaotic. Your current task is to collect as many nerve signals as possible in the monkey brain, then test and classify them, and mark them in detail so that for follow-up comparisons."

Zhang Li nodded solemnly, and wrote down in the notebook with the pen in her hand.

Chen Yiqing finally looked at Wen Renlong.

"You can't be idle either. Together with Zhang Li, you can improve the signal processing algorithm. See if you can accurately identify the monkey's action intention through a specific signal."

"Because monkeys do different actions, the brain signals produced are definitely different. We need to collect as many signals as possible and use algorithms to accurately identify them."

"When Dali made a new type of microelectrode stent, we implanted it into the monkey's brain blood vessel, and the brain-computer interface experiment officially started."

Finally, he paused, looked over one by one again, looked directly at everyone, and said slowly.

"The total length of blood vessels in the brain is more than 400 kilometers, they can reach almost any part of the brain, and they are almost attached to the surface of the brain."

"If the vascular stent scheme is successful, we will be able to access parts of the brain that have never been accessed, open a huge unknown treasure house, and achieve unprecedented achievements."

Clap clap!

Everyone stood up excitedly and applauded enthusiastically.

*****

In the next few weeks, all four were busy working.

According to Chen Yiqing's idea, Wang Dali designed a cerebrovascular stent.

This stent is small in size, only the size of a silver needle, and consists of expandable mesh stent electrodes.

No need for open brain surgery, just a small, minimally invasive procedure on the neck.

Then, through cerebral angiography, with the aid of a catheter, it is possible to pass through the blood vessels in the neck and a series of curved cerebral vessels to reach the blood vessels above the motor cortex of the brain.

After implantation, as long as the auxiliary catheter is removed, the stent will begin to expand on the vessel wall to form a hollow three-dimensional grid.

The stent collects neural electrical signals generated by the brain and transmits them to external receivers.

"It is estimated that a stent will use 20 sensors, and then the material of the stent should preferably be a flexible alloy, and the size should be small, with a diameter of no more than 5mm, so that it can be placed in all brain blood vessels as much as possible."

"Of course it's not impossible to make it smaller, but in that case, you can only reduce the sensors on it."

As soon as his train of thought slipped to this point, Wang Dali suddenly got stuck.

An image flashed in his mind, that was the hat on the monkey's head, which contained four neural chips and receivers.

"It seems that after the nerve electrical signal is collected, how to transmit it is also a problem."

"The monkey is undergoing a craniotomy. After the microelectrode is placed, the connected wires can be used to transmit signals. But this stent is in the blood vessel, and the only way to transmit the signal is through the blood vessel."

He patted his forehead, and instantly had a good idea.

"Just like a submarine cable, a wire can be connected behind the buttocks of the stent to transmit nerve signals. As for the outlet, it can be placed at the blood vessels in the neck."

"A receiver can be implanted under the skin of the neck, and then the received nerve signals can be transmitted to an external portable decoder through wireless technology."

"The decoder has a powerful chip that converts these neural signals into specific digital commands through machine learning algorithms."

"Then again through wireless technology, control the exoskeleton or electronic equipment."

"In this way, paralyzed patients can complete a series of operations such as surfing the Internet and drinking water with their minds."

"Okay, let's follow this idea, first design the bracket and then talk about it."

Wang Dali snapped his fingers proudly, and continued to bow his head to perfect the design drawings.

At the same time, Wen Renlong and Zhang Li were also busy recording new brain signals and designing new algorithms and computer programs.

The four devoted themselves to their work, preparing for the upcoming brain-computer interface experiment.

*****

Time flies, and a month has passed in a blink of an eye.

On this day, the Neuroscience Laboratory welcomed a special visitor.

Jian Lianyun, dressed in white professional attire, followed Chen Yiqing closely, and walked into the laboratory with a curious expression on his face.

As soon as I entered the door, I saw a row of people standing in the corridor in front of me. Each of them stretched their necks and looked towards the door, like tourists watching rare animals in a zoo.

When Jian Lianyun appeared in front of him, everyone shouted in unison.

"Hello, Doctor Jane."

When Jian Lianyun heard this thunderous shout all of a sudden, he couldn't help being startled, and his face almost turned pale.

Chen Yiqing quickly explained: "These are all laboratory employees, not many people, about fifty or sixty people. They are very excited when they hear that you are coming to work together, and they want to see the boss's true face."

Jian Lian Yunchang breathed a sigh of relief, calmed down, smiled and waved to everyone.

"Hi everyone, nice to meet you. You are so polite, just treat me like an ordinary doctor."

Chen Yiqing stood behind him, winked at everyone, and said, "After saying hello, go back to work and don't cause any trouble to Dr. Jian."

Everyone said hello in unison, and then dispersed happily.

Chen Yiqing wiped the cold sweat from his forehead, and walked towards a room on the right with Jian Lianyun.

"You came just in time. Both Dali and Aaron are here, and they are watching monkeys playing games. I'll take you there to find them."

The two came to the closed door, pushed the door open and entered, and the two tall figures instantly came into view.

It was Wen Renlong and Wang Dali, but they seemed to be unaware of their arrival, standing motionless in front of the big screen, watching something intently.

Jian Lianyun glanced at it, the room is very small, only about ten square meters, except for a big screen on the opposite side, there is nothing there.

She raised a hand and was about to greet the two when suddenly—

bang bang bang!

A fierce wave of sound rushed towards the face, and after swallowing the two of them, it quickly spread to the entire room.

Jian Jianyun's heart stopped for a second, then she looked at the big screen.

I saw gophers coming out of the holes, beating wildly.

This picture feels strangely familiar.

"Whack-a-mole game?" Jian Lianyun exclaimed.

Chen Yiqing nodded, and said softly, "Look under the screen again."

Jian Lianyun glanced over, and immediately saw a thick industrial mechanical arm.

Two finger-like attachments at the end of the arms allow for a firm grip on simple items.

At this time, the mechanical arm seemed to be controlled by an invisible hand, holding a control rod with two fingers, and waving it regularly.

With the movement of the arm, the big stick on the screen also dances.

The moment the gophers first came up, they were hit by the huge stick, staring at their eyes, shrank their heads suddenly, and disappeared into the hole.

bang bang bang!

The gophers popped up one after another, and then they were continuously beaten into holes with big sticks.

Lightning-fast and incredibly precise at the same time!

Jian Lianyun looked at the hamster, then at the mechanical arm, and after looking at it several times, he finally made up his mind.

No one else but this robotic arm is playing the game.

This scene gave her a huge shock in an instant.

She couldn't help opening her mouth wide, her mind was buzzing like a pot had exploded.

"My God, is the robotic arm controlled by mind?"

"This is really cool!"

A high-pitched admiration came out of her mouth involuntarily.