Academician Konovalov is one of the ten outstanding surgeons of the 20th century, who for many years headed the N. Burdenko Research Institute of Neurosurgery. The slightest careless movement of a neurosurgeon, imperceptible even under a microscope, can result in a loss of memory, speech, the ability to think or feel for the patient. That is why neurosurgery is recognized throughout the world as the most elite field of medicine, because the area of influence of a doctor is the most delicate, the human brain.