How is it possible to control the computer by the human brain? Brain-computer interface.

How is it possible to control the computer by the human brain? Brain-computer interface.

If you were asked to imagine the future of technology, what kind of imagination would come to your mind? পরিবর্তন Changing a TV channel without doing anything ( remote and without pressing) while lying down? Play computer games with the help of the mind? Or  display the  game play directly in the head without playing the game  on the monitor  ? Going into the world of computer games? Falling into people's minds? Your imagination seen on the computer screen? Although these thoughts at all pagalamu  brain-computer interface  (Brain-computer Interfaces) or  BCI  (BCI) technology to be busy all this possible.

As modern computers are evolving day by day, they are also trying to understand the human brain. And as a result, we are able to turn the science fiction of our imagination into a busy one. In this article, I will learn how BCI works and discuss the possibilities of this technology, so let's get started.

The electrical signal of the brain .

Why do we compare the human brain and the computer and why do we want to connect the two together? See, computers are electronics  devices  made of plastic, transistors,  ICs, etc.  , but the human brain is a living thing; Which consists of numerous small cells, such as the 100 billion  neurons  , the nerve cells, each with one another  denadraitasa  (Dendrites) and  Ask  (Axon) is connected by.

It is clear that the computer and the brain are completely different things. But the way the brain works is a lot like a computer. When we speak, act, think, or do anything নিউ neurons work to complete it. And while doing this, the neuron generates a kind of electric signal and it is shared from neuron to neuron. And you must know that electronics also work on electric signals. Based on these electric signals it is possible to connect the brain to the computer or the computer to the brain. Artificial neural networks  and  mind uploading  technology work on this concept.

However, scientists are able to read the electrical signals generated in the brain, meaning that scientists can capture the different types of signals that are generated in our brain during different tasks, and understand which one is produced for which work. Suppose you see a red or green color in front of your eyes, now the optic nerve from your eyes will send a kind of electric signal to the brain.

And the data is zipped in that signal, exactly what color your eyes have seen. Now if you can read that signal and send the same signal directly from the camera to the brain, your brain will see the same color, thus creating a signal with the help of the camera to blind people. Because no matter how much the eyes of the blind are damaged, their brain's ability to recognize signals is not lost.

Brain-computer interface .

The brain-computer interface can be said to be a direct connection between the computer and the human brain. This  Human Computer Interface  (Human Computer Interface) or HCI  (HCI) 's latest upgrade. Mouse, keyboard or other input devices must be used to provide some input to the computer, but BCI can provide input directly to the computer from the brain. You don't have to type anything, just bring it to your head, and everything will be typed instantly on the screen, you can even move the mouse cursor through the brain. Thousands of BCI possibilities and applications. Everything possible between humans and computers can be done by improving this technology. Think about next generation gaming, where you don't have to gamble with a keyboard or console. There may be a wireless chip attached to the head, and it will be connected directly to the computer, it will be possible to control the game from the direct brain. Think again about disabled patients who can't hear, Or do not see. It is possible for them to generate electrical signals directly from the camera and mic and send them to the brain to show and listen to them. What could be a bigger discovery than this in the human-computer interface?

Furthermore, more details about brain activity and neural networks can be learned through BCI, which will lead to further improvements and accuracy in Artificial Neural Networks and Mind Uploading Technology. নাBecause the more we know about the human brain, the more we can build computers like this. Think about a social media where after uploading a photo, you can post your feelings, memories, likes with the photo and someone else can feel them just like you. In this way, the more we begin to understand the brain, the better the application will be. The BCI application system works by keeping track of the activities of the entire brain. The inputs and outputs of BCI are discussed below;

BCI input / output .

The basic idea of ​​getting this technology to work properly has caused a lot of trouble for researchers, because our brain is not a simple thing, it has millions of neurons and is always generating millions of signals.

The human brain works in the most complex way. To read the signal from the brain, you need to put something in your head that will capture the signals and send them to the computer. For this purpose  electrodes  (Electrodes) is used, the name of which devices  ilektroenasephyalographa  (Electroencephalograph); And it needs to be applied to the scalp. The electrodes can read the electrical signals in the brain, but the problem is that there are many weak signals coming from the brain and most of the signals are stuck in the skull.

So to get better signal quality, the researchers cracked the skull and planted an electrode directly on the brain. To plant the brain electrodes on the head here to see the real picture  → ( Figure -1  |  Figure II ) Click .  

Note: I would recommend the  pictures not to be seen by people with weak hearts .

Installing electrodes directly on the surface of the brain results in much better signal quality than before.

However, it is not uncommon for the skull to be ruptured and for electrodes to be placed at the very top of the brain, requiring massive surgery. Once successfully planted after surgery, the electrodes begin to capture electrical signals from the brain, since the signals are so weak that they are filtered and amplified to function properly. The patterns of these electric signals are saved by a computer program, just like the audio wave form to see these signal patterns.

First the type of signal that is generated in the brain for a task is read and then the exact reverse signal is generated from the BCI program in the computer and planted in the neurons of the brain. Suppose your eyes are seeing some subject, in which a kind of signal is reaching the brain.

Application .

As I said before, there is no end to the possibilities with BCI. Many things in your imagination can be turned into busy. However, after reading many articles on this subject, I saw that this technology is being improved mainly to help the disabled, although there is a lot that can be done outside of this. Even then, there could be no greater purpose than this. It is possible to restore the sight of the blind by using the camera. Moreover, this technology will bring blessings to those who have lost limbs since birth or due to various accidents. They can be fitted with robotic limbs, which will receive signals from the brain, but those that will be fitted with robotic limbs will require practice to function properly.

Moreover, it will be possible to move the computer cursor by thinking of moving a subject in the brain, everything will become mind control. Moreover, if it is possible to read the brain in more detail, maybe something can be typed using the mind, moreover, there will be the advantage of changing the TV channel without doing anything. Note that once all the processes are done properly, there will be no limit to the possibilities with the brain-computer interface.

How far are we from BCI?

By now you must have understood all the basics of the brain-computer interface, now the most important question is; How far is the brain-computer interface from the technology in front of our eyes? See Brain-Computer Interface No more science fiction now, it's living science! But it has not been possible to make BCI perfect yet.

See our brain is not so simple, our brain is more complex than any complex machine in the world; It contains billions of neurons that are constantly sending and receiving electrical signals to each other, and the electrodes have not yet been able to capture the signal with such precision. Moreover, not only electrical signals but also chemical matter occurs in the brain, which cannot be captured by electrodes.

Moreover, there are many weak signals coming from the brain which is like capturing a lot of fish in a fish market standing ten hands away talking to someone. And the biggest problem is that wires are still used in the brain-computer interface, and the size of the computers is gigantic, if portable and wireless technology can be incorporated here, then this technology will spread. But I'm sure we can.

Last word.

Where there is talk of something extraordinary, he does not want to end it. Even then, I have to finish because the article has become too long. So what do you think about this amazing technology? - What are the possibilities? Can it be improved at all? Let us know everything by commenting below. So many thanks so far today for bothering to read this post to the end.

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