Scientists for the first time managed to transplant memories of one snail another

<pre>Scientists for the first time managed to transplant memories of one snail another

At the University of California, Los Angeles, a successful experience in transplanting nerve cells with the knowledge contained in them from one living creature to another. As the experimental object, snails of the Aplysia species, beloved by neurobiologists, whose brains are very similar to human ones, contain only 20,000 neurons versus 100 billion in humans. Some of these neurons also became the object of transplantation.

The purpose of the experiment: verification, is it possible to transfer the experience obtained by one snail, another individual? For this, the “donor” was beaten with weak discharges of electric current into the tail, forcing him to be more cautious and to hide the sensitive part of the body in the sink longer. As a result, after a few days of “training”, the difference between the control group reached 50 seconds of delay against just one second in “untrained” snails.

Further, scientists borrowed RNA from neurons of “experienced” snails and introduced them to seven untrained individuals. After several stages of cell division, the nervous system of the recipient snails began to react to stimuli in the same way as their trained counterparts. There is a transfer of new, previously unknown reflexes and memory from one snail to another.

But the transfer was not complete and clean, the snails with transplanted memory showed worse results than their “teachers”. When simulating in a Petri dish, it became clear that RNA with memory affects only sensory, but not motor neurons. This changes the idea of ​​where exactly the memory is stored, and therefore the work on its transplantation is only at the very beginning of the path. But already achieved results inspire – humanity has another chance to cope with severe brain diseases!

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