why we know the scientist physiologist svetlana georgievna are glad to see you again in our studio. hello svetlana georgievna pashkevich candidate of biological sciences associate professor, head of the laboratory of neurophysiology of the institute of physiology of the national academy of sciences of belarus scientific interests experimental neurophysiology let's start purely physiologically, what is pain? first of all, more signals to us that we did something wrong, that the body is exposed, but to the effects of damaging factors, and therefore, very often pain factors are called, but c-ceptors, but ciception is a term that charles sherington led to indicate a damaging effect and, uh, when the body signals to a person that it does not touch and it can be burned hot, then the person pulls his hand away. for this. we have signaling along nerve fibers so that we can very quickly avoid a damaging factor, and such fast fibers are called, and delta. and we also have slow fibers. this is a slow and such a spreading pain that is difficult for us to localize, and such pain occurs if the introduction is not acute, but it has b