Did you consider it impossible to govern the thoughts of others? Scientists are prepared to contest that they are now closer than ever to being able to regulate brain functions remotely.
Carl Deisseroth, a Stanford University physician and bioengineer, introduced the field of optogenetics with his publication on optical control of the brain only about 15 years ago.
How does this approach function? Our nervous system is made up of neurons and nerve cells, and these cells have membranes that contain a light-sensitive protein called a photoactivated protein. As implied by the protein’s name, it is triggered by light and helps you locate the appropriate clusters of neurons in a human or animal’s brain. How come? In the past, neurologists and neurophysiologists used the general structure of the brain, an approximation of the “map” of neurons (the human brain contains about 80 billion neurons! ), and cases of disorders they encountered while treating patients to judge the principles underlying the brain’s operation.
The best motivation to investigate how, for instance, the blow to the head caused injuries to completely different body regions is occasionally an unsteady stride or a rapid loss of balance following a head injury. The study of clinical cases can help understand mental diseases. The investigation of complex neurological activity, however, proceeds very slowly without a thorough examination of the neurons themselves, which organize into intricate, branched networks, each of which can control a different bodily function. It moves considerably more quickly if specific groupings of neurons can be illuminated and seen.
However, that is not the only “bonus.
Managing Mouse Minds
Now let us go back to Karl Deisseroth and his all-star group of scientists. Researchers altered the nerve cells in the mouse brain with rhodopsin genes, which are found in algae, to develop a system for controlling neurons in addition to a system for “detecting” them. Rhodopsins, in turn, use energy by allowing charged ions to enter cells. Well, charged ions can alter the electrical activity of neurons, affecting the animal’s behaviour.
However, researchers found that even these optogenetic techniques were insufficient. Optogenetic techniques prevented it from penetrating the thick fatty tissues of the brain, posing significant difficulties on the road to the brain’s deep structures. Then they developed “implants” — fibre-optic wires that allowed them to “light the light bulb” or conduct light into difficult-to-reach brain regions and neural networks. However, because this was a significant alteration to the brain, researchers did not stop there. Instead, they developed a new tool that would not damage neural networks while also allowing them to control the behaviour of the mice, which served as the test subjects for the entire laborious and drawn-out study. Suppose you bravely refuse to use complex terminology or word combinations that are difficult to understand. In that case, you will know: DREADD (designed receptors exclusively activated by designer drugs), which in English sounds like a technology of synthetic receptors activated by a particular ligand, is the name given by American bioengineers to their unique approach to manipulating mouse minds. It is much simpler to understand the outcome and importance of using what has been described as so frightening: today, it is feasible to control brains, from triggering the desire to eat to bringing about a state of sleep or wakefulness.
Even while answering these questions may seem far off in the future, keep in mind that thirty years ago there was no internet at all. Twenty years ago, we were still utilizing floppy disks, which had a storage capacity of just 1.4 MB (we have 1TB USB drives on Amazon now).
We would be far better prepared for future developments if we addressed potential problems early on since technology is developing at a rate that is quicker than most of us can foresee. Thank you for sharing this – it was really interesting to read.