[Brain-computer interface: is a direct connection pathway created between a culture of human or animal brain or brain cells and an external device.] At present www.biquge.info brain-computer interfaces can be divided into two categories: invasive and non-invasive, of which invasive brain-computer interfaces include multi-electrode arrays, silicon nanowire field-effect tube arrays, artificial nerve cells, molecular biology optogenetic stimulation, and intraosseous permanent implantation of neural dust, etc., and non-invasive brain-computer interfaces include EEG, encephalography, functional magnetic nuclear resonance imaging, near-infrared light brain imaging and positron emission tomography. ]

(April 8, 2012, Sunday of the first week of school; streets in the shade)

It was a calm night, the night was as cool as water, the breeze was gentle, and the shadows of the trees were waving. The tree-lined streets are shrouded in dim lights, and only the occasional passing car on one side of the street rustles the foliage with gusts of wind.

Sora Akiyama walked down the street slightly tired with a suitcase. Previously, he attended the 19th International Conference on Neural Information Processing in Tokyo and has just returned from Tokyo.

The team of the Brain Network Group Research Center of the Institute of Automation of the Chinese Academy of Sciences has drawn up the [Brain Network Group Atlas], which can be said to break through the traditional thinking of drawing brain maps for more than 100 years. As he walked, he thought, "The research of brain-computer interfaces has always been limited by the basic research of brain science, and this is a big step forward." ”

Before the advent of the "Brain Network Group Atlas", the most commonly used brain map was the brain map drawn by the German neuroscientist Brodmann on a single cadaver tissue specimen more than 100 years ago using cell construction, which was called the "Brodmann Atlas".

In addition, in the past three decades, the development of imaging techniques such as non-invasive magnetic resonance imaging technology has allowed brain scientists to measure the shape and size of the brain, the nerve fibers that connect different parts of the brain, and the functional activity of different brain nerve circuits or pathways. However, the brain map based on structural magnetic resonance imaging is mainly based on the topological distribution of the sulcus gyrus in the division of brain regions, and the definition of brain regions is very rough and even has obvious errors, which is difficult to correspond to the functional anatomy of the brain, and these fatal defects are very unfavorable to the brain-computer interface research engaged in by Akiyama.

The [Brain Network Group Atlas] includes 246 fine brain subregions and multimodal connection patterns of brain region sub-regions, and introduces a new idea and method of fine division and brain mapping based on brain structure and functional connection information, which is 4 to 5 times more precise than the traditional [Brodmann Atlas], with objective and accurate boundary positioning, and establishes a living whole brain connection map on a macroscopic scale. In addition, the Brain Network Atlas also quantitatively depicts the anatomical and functional connectivity patterns of different brain subregions, and provides a detailed functional description of each subregion, which is a major progress in basic research in the field of brain science.

Although the work was not presented at the conference, the participants mentioned the study in many interactions, especially the use of its software to divide the collected data into brain regions.

"In other words, in the past ten years, the level of science and technology of mankind has been flying upwards like a rocket, and there is even a feeling that the exponential skyrocket......" Akiyama muttered, "This is definitely extraordinary among the civilizations I have traveled." ”

He tried to search in his own memories, but the limited capacity of the human brain meant that it was impossible for him to transmit all the memories, and in the end he didn't think of anything, but subconsciously felt that something was wrong.

A heavy wheezing sound from the woods interrupted Sora Akiyama's thoughts. He couldn't help but stop and watch, only to see a petite girl with short hair running towards the slide on the lawn in the park, panting as she ran. In the distance was a tall, slender figure, recognizable only as a woman in the dark, unable to see her face clearly. She seemed to have some kind of weapon in her hand, and the dim street lamp in the distance stirred up a silver light.

"Is it a cold weapon? When has the security here been so bad?" he thought to himself, so he slipped behind a tree and hid, took out his mobile phone, and was ready to call the police at any time.

As soon as the girl reached the slide, she got under the slide and looked timidly in the direction of the tall woman, as if to avoid her. Sora Akiyama knew very well that with his untrained skills, he would never deal with a knife wielder with his bare hands. Is it possible to use the ability to correct reality as an observer?

The tall woman approached, and he was stunned to realize that what the other party was holding in his hand was not a knife at all, but a soup spoon.

"This ...... What the hell is this!" Akiyama wanted to cry without tears, "Well, it's always right to be cautious. ”

"Liuhua, don't run away, I know you're there. The tall woman said coldly as she walked over.

The girl called Rokhua had no intention of coming out at all, and was still hiding under the slide.

Only then did Akiyama find that the facial lines of the two were seven or eight points similar.

"Uh...... It seems that I am thinking too much, are these two people sisters?" He smacked his lips, secretly relieved.

Poof!

I saw the tall woman throw the spatula out like a boomerang, hitting the metal pillar of the slide with a crisp sound.

"What kind of trouble are the sisters who came out to play late at night......" Akiyama Sora no longer hid, and continued to walk in the direction of home, "Eh, it seems that when I was a child, Nanamiya Tomoin also had two or three inexplicable midnight outs to play, and in the end, it was her uncle and aunt who caught her home and ordered her to sleep honestly." This minch ......."

(April 9, 2012, Monday, one week after the start of school; 4th floor, Akiyama Soraya)

The weather is nice today, with white clouds wafting in the blue sky and the sun is warm but not blazing.

Sora Akiyama stood on the balcony and stretched, thinking about his recent research topics.

A "poof" sound from downstairs interrupted Sora Akiyama's thoughts. He leaned out and looked down, only to see someone on the third floor throwing a large bundle of rope, and then the short-haired girl Liuhua he met last night slowly slid down the rope. Sounds like "Infiltrate complete" and "Mana Charge" could be heard faintly downstairs.

"It can't be a secondary two patient, right?" he thought, "so the two sisters were playing an exorcism game last night?"

Sora Akiyama recalls the time when he was sick in the middle school. Not all universes have the same or similar cosmic laws. At that time, in one of the series of dreams about a certain universe, he incarnated as an immortal, with vast magical powers, crisscrossing the three realms. For a time, he couldn't tell the difference between dreams and reality, because both were memories of real experiences. His second year journey with Tomoin Shichinomiya also began at that time.

It wasn't until later that the memory transmission was slowly completed, and as soon as Akiyama Sora recalled the events of that universe, he naturally remembered a series of headache-inducing mathematical derivations such as "the seven fundamental forces and their unification" and "the standard model of chaotic fields".

The Xianxia painting style is completely ruined!

Seeing that the time was almost up, Akiyama Sora gathered his thoughts, closed the doors and windows, and hurried downstairs to catch the train.

……