The doctor who came in, Lei Pengfei didn't notice at all, he was reminiscing about the conversation with Professor Song in the morning.

From what Professor Song said, it can be deduced that in a sense, our brain's thinking can imagine the four-dimensional space, and if it is presented, then the transformation from three-dimensional to four-dimensional can be obtained. It turned out that this was the purpose of the experiment, and he had always thought that it was simply an image composed of brain waves.

But how to present it, and whether it is a four-dimensional space, this remains to be verified, this is a deep water area, and no one has entered it yet.

If it can really be presented, then there is also the question of whether this is a conscious spatial image or an unconscious spatial image. If it is specifically imagined by us, then it is a conscious image, and if it is unconscious, it is like an image constructed in the brain in a dream or other state of absence.

There are similarities and differences. The common denominator is that the consciousness of the brain is used to construct the image, and the difference is that one is active and the other is passive. The conscious is active, and the unconscious is passive.

Then a new question arises, whether active or passive. What happens if the brain is constantly in the image or scene that is presented? Will it trap people in a space and can't get out, can it be said that it extracts people's neural consciousness, just like Rapoo.

Just as he was in his thoughts, the doctor spoke.

"Your name is Ray-Ban," the doctor asked him as he looked at the slip he had just filled out.

"Well, yes," Ray-Ban replied after a moment's reckoning.

The doctor looked at him, "Why are you alone?"

"It's me" Lei Banfei wondered, why would the doctor ask him that.

The doctor frowned, "Professor Song called and said that there was another animal's"

Lei Banfei suddenly realized, he only remembered the scene when he was talking to Professor Song in the morning. With a smile on his face, he replied embarrassedly, "There is another animal, and I was afraid that the hospital would not let me bring it in, so I didn't bring it with me." I'll go home and bring it now if I can."

Actually, it wasn't that he didn't want to bring it, he was thinking that this was a hospital, not a veterinarian. He could find an excuse to bring out the chip injected into his pet and see for himself what the biochip really was.

"It's okay, the whole injection process is very fast, it's over in a few minutes, you can bring the animal," the doctor said, looking at him.

Now the doctor let him take it, and he didn't have it to stump him.

He thought for a while and said, "I'll bring it myself, you wait for me for a few minutes" I didn't bring it, you can buy one at the pet store outside and bring it over.

He walked out of the hospital door, and within a few minutes, he carried a small cardboard box into the hospital. The box he was carrying was a hamster he had just bought from a pet store. Because the object they usually use for experiments is a guinea pig, and they can't find it for a while, they take a hamster to replace it temporarily.

He entered the door of the department and said again and again, "I'm sorry, I'm sorry" The doctor saw that the test subject was confirmed, and he prepared to work before the injection. The injection was done in two injection chambers for humans and hamsters, and it was really fast, and the whole process added up to 5-6 minutes. After the injection, he didn't feel any pain, and the doctor told him not to take a shower for a day or two. However, the location of the doctor's injection is near the spine, and it is not easy for him to touch it with his hands. After listening to the doctor's instructions, he took his pet home.

After listening to Professor Song, Dr. Qi held his chin and muttered to himself, "It shouldn't have reached that point yet." He muttered in his heart: If the kid's experiment did succeed, or succeeded once or twice by chance, then it would be a great reference for both of them. If Ray-Banfei's laboratory was completed according to the original idea, then he really solved or broke through a scientific problem, but he didn't know how far the experiment over there would be.

Regarding the question of space, Lei Banfei still imagined it too simply, and he divided it into two types, one is active and the other is passive.

Let's first solve the active, active spatial problems that we usually use, arithmetic, writing, music, painting, ...... Painting, in particular, no matter what you draw, it is a product of your brain.

For individuals, there is no such thing as a good draw or a bad draw, only the coordination of your brain and limbs. Good coordination can make the image in your brain appear in a higher proportion, if the coordination is not good, then the proportion will be lower. By proportion, we mean that your limbs don't represent 100% of what is produced in the brain.

Suppose you have a picture in your head, then when you are creating, you can only complete part of the work, not 100% of the whole thing, because there is no absolute thing in the world, just like there are no two identical leaves in the world.

So now what's the point of explaining EEG imagers?

The meaning of the EEG imager is like a mirror, as long as you can present the original image in your brain, then it can present you with an exact thing, absolutely 100%. Because it's not painted, it's copied, and that's just one of its functions.

The function of the above image can be said to be flat, and the other is the depth development of space.

It is often said that things in three-dimensional space are like a blank sheet of paper, and people are like ants on this blank paper, and you should never want to climb out of this blank paper. If you can't climb out of this flat white paper, you can't understand the four-dimensional space. We can look at it from another angle, the four-dimensional space adds a time axis, the three-dimensional space we see as a plane, and the time axis is the depth or the plane extending to both sides. Because the three-dimensional space only exists in the present scene, while the four-dimensional space has an extension forward or backward.

Assuming that the images in the brain can be presented, then basically opening the door to time, this is only one of the assumptions. Another problem that arises at this point is that the timeline can only be extended backwards, not forwards, because the front has not yet arrived, and of course this is only one of the conjectures, because we can't prove that you are running ahead of time.

And the timeline extends backwards, so we can theoretically go back in time.

As for how to prove that we go back to the past, then we can prove it from the past time and place, but in the future, there is no way to prove it.