Chapter 157: [Time Walker] Hidden Waves Under Calm (2)
With the consent of the other party, one party immediately began to perceive the surrounding electromagnetic wave signals, and quickly identified and screened out the electromagnetic wave signals released by Mikoto Misaka, encoded them, and constructed a unique psychological representation in his own mind.
"So, the next step is to interpret the EEG signals. ”
He hesitated, reaching out and stroking the top of the girl's head. This intimate action made the other party's little face flush, and his already pretty appearance was even more cute, but he didn't have the energy to pay attention to it.
For the first time in the two months since the ability awakening, Fang Tong felt that his computing power was not enough. His [vector manipulation] detection is undoubtedly much more accurate than the EEG equipment in the hospital, but this does not mean that the errors in these detected electrical signals are correspondingly reduced, and the problem of locating the activated areas in the brain is also a problem. How can we eliminate noise from the signal and compensate for the lack of spatial positioning?
Compared with the previous focus on "manipulation" and the ability to change the direction of various particles, this kind of "detection" and "analysis" work, especially when he does not have a particularly suitable method of data interpretation, undoubtedly poses a higher challenge for his ability to use. This is not the usual way of using [Vector Manipulation], and the instincts that come with the awakening of abilities are nothing to do.
Not only that, if the goal is to reach the point of "heart-to-heart communication," can human concepts and thoughts really be reduced to or even equivalent to the activity process of brain neurons? Even from a purely scientific point of view, the speed of nerve impulses transmitted by a single neuron in the form of potential changes, as well as the opening and closing time of the vesicle fusion pore membrane orifice, are absolutely not enough to support the amount of calculations required for him to exert his current ability; not to mention the "Yang God" realm of Dan Dao cultivation—— This form of intelligence, which does not depend on a material basis, has also been proven to be tangible and feasible.
Even if you want to coordinate your movements, it seems that the use of event-related potentials, which is "voltage fluctuations related to specific physical or mental events in time," is not enough to provide detailed information that can guide muscle movements.
The thoughts in my heart became more and more chaotic, and at the same time, the hand that touched Mikoto Misaka was still reading the information, and I only felt a splitting headache when I passed, and the beating of my heart seemed to be a little overwhelmed. No, no, it can't go on like this. Although I am not reconciled, as I said before, I will follow reason and stop further damage to my body, there will always be a way, and there is no need to rush for a while.
Thinking so, Fang Tong restrained his stubborn thoughts, withdrew his hand, and his body was covered with cold sweat.
"I'm sorry, Misaka-san, I failed. ”
Ah, is this what it feels like to be slapped in the face for talking big? He couldn't help but avoid the other party's gaze. I had this kind of thought, and sure enough, even if I awakened unprecedented superpowers, I was still a child. If you think about it carefully, after awakening your ability, you are a little too conceited.
"Poof...... Hee-hee. ”
Mikoto Misaka burst out laughing, and then put her hands on his shoulders before he could react.
"Now, you know what? You looked really cute! Well, why do you apologize? You didn't do anything wrong, if this plan doesn't work, we'll prepare for the game normally. ”
What he heard was not a sneer, and Fang Tong was stunned for a moment, and then relieved.
"I'm a boy, and it's hard to be embarrassed to use the word 'cute'. ”
"Well, yes, but that's how one of my classmates feels. ”
"It's not something I can control...... Well, it seems like it works in theory. ”
After making a few jokes, one party turned to look at Sora Akiyama next to him, and told the other party about the problems and doubts he had encountered in the previous test.
"The problem of spatial positioning...... Your ability to capture EEG signals as well as EEG signals can also capture EEG signals, and the latter has little influence on the medium during conduction, and the signal is not distorted, so the spatial resolution will be correspondingly high. In addition, by combining the MRI image, the signal source can be precisely located – oh, forget it, you can also read the motion of the fluid, so there is no need to use the ability to simulate functional MRI. ”
Fang Tong nodded. Functional magnetic resonance imaging (FMR) is based on the use of magnetic resonance imaging to measure changes in hemodynamics caused by neuronal activity. The neurons themselves do not store oxygen and glucose, and the glucose and oxygen consumed during activation need to be replenished from blood in nearby microvessels, which leads to an increase in blood flow and the aggregation of oxygenated heme.
Heme is diamagnetic in the oxidized state and paramagnetic in the hypoxic state, so different magnetic resonance signals can be distinguished according to the oxidation ratio of heme in the blood. And since he can directly read the kinetic information of blood, he naturally does not need to make simple things complicated.
"In addition to this, I think there is information that can be mined not only for blood, but also for other fluids. This is a great review of fluids in the brain, and if you have the energy, you can dive into this area. As for the problem of insufficient computing power, there is still a lot of room for improvement in your ability, and I will not hide it from you, you have the potential to become a Level 6 [Absolute Ability Person], and with future development, you will naturally increase your computing power. My suggestion is that you can slow down this project, and you are not a PhD student anyway, and no one will rush you. ”
……
(Forbidden World, September 4, 2013, Wednesday, Night; School City, School District 14, Dormitory)
After doing his homework, he took a shower and changed into dry pajamas. Today, he and Mikoto Misaka trained with the other players for more than an hour after school, and at this moment he was completely relaxed, and he couldn't help but feel limp. He put on noise-canceling headphones and lazily leaned back on the bed, using the data terminal to read the summary recommended by Akiyama Sora yesterday.
"The inorganic ions in the brain fluid ultimately come from the peripheral circulation. They are delivered through two major blood-brain interfaces: the choroid plexus, located within the ventricle, and the blood-brain barrier, which is distributed throughout the brain parenchyma. The relative contribution of these two interfaces to cerebral fluid production and the regulation of its ionic composition is a key issue discussed in this paper. ”
In this 69-page review paper, the background alone contains many concepts that have not been touched by one party. A structure called a choroid plexus forms the interface between blood and cerebrospinal fluid in the ventricles. There are four such plexiculates into the ventricles, one for each lateral ventricle and one for the third and fourth ventricles, located in the middle and lower parts, respectively. As seen in a light microscope, each choroid plexus has a leaf-like shape with many villi accompanied by a layer of cubic epithelial cells covering the fenestration-type blood microvessels.
So, what is the "choroid plexus"? Although he had a little knowledge of physiology and anatomy, he did not study the subtle structure of the brain in depth, and most of his energy was focused on mathematics and physics. According to the data, the choroid plexus is a choroid-like tissue cluster structure in the cerebral ventricles composed of the leptomeninges and the blood vessels that repeatedly branch on them, and the ependymal epithelium, which is the main structure that produces cerebrospinal fluid. Thanks to his extraordinary computing power, he easily built a detailed diorama in his mind.
The brush-like margin and basolateral folds of the apical brush margin allow for a larger actual membrane area of epithelial cells. As described in detail by Cserr and more recently by Damkier et al., the epithelial layer has all the characteristics of a "leaky" secretory epithelium capable of producing large amounts of approximately isotonic fluid...... These stacked unfamiliar terms make it necessary for one party to consult their definitions from time to time.
The blood-brain barrier has a more complex structure than the choroid plexus in some respects. It separates blood from interstitial fluid (ISF) and brain parenchymal cells. Scientists call it a "barrier" because it greatly restricts the exchange of many substances between the brain and the bloodstream. The blood-brain barrier consists of the endothelial layer of almost the entire cerebral microvascular network. However, the delivery of substances across the blood-brain barrier is just as important as its obstructive role as a barrier. Its structure is well suited to provide a substrate for the metabolism of brain cells and remove the corresponding waste products, and regulating the ionic composition of ISF is also one of its important functions.
Seeing this, Fang Tong decisively closed the document on the screen and planned to study neurobiology in the next twenty minutes. My higher cognitive ability is indeed higher than that of ordinary people, he thought to himself, but this should definitely not be the confidence to be ambitious, but more to follow the rational way and rationally plan the structure of knowledge.
"Well, that's it for today, it's time to go to bed on time. ”
Looking at the time, the corners of Fang Tong's mouth were slightly raised, and he moved the cushion on which he was backing, and then lay flat on the bed, closing his eyes quietly. Tomorrow, I will work with Misaka to further develop my understanding of neuroscience. As he thought so, his waking consciousness gradually receded, and the hazy subconscious took his place.
……
-------
Reference: Fluid And Ion Transfer Across The Blood–brain And Blood–cerebrospinal Fluid Barriers: A Comparative Account of Mechanisms And Roles (Actually, I didn't understand it either).
The party that grew up is passable, and can use [vector manipulation] to crack the virus in the brain of the last work, let's pave the way here, and if professionals have suggestions, please point it out in the comment area.