[Andrey Lvovich Polenov - the founder of national traumatology and neurosurgery (by the 150th anniversary)].

April 19, 2021 will mark the 150 anniversary of the birth of Andrei L. Polenov, an outstanding Russian surgeon, scientist, public figure, the founder of traumatology and neurosurgery, the creator of the first scientific and practical schools of traumatology and neurosurgery in our country.

[Head surgery in the pictorial art of the past].

Purpose: The study purpose is to explore the early history of head surgery in terms of artistic figures, based on authentic artistic artifacts of the past.

Material And Methods: We performed a detailed analysis of many paintings, engravings, and illustrations for medical publications of the Middle Ages and Renaissance, which were definitely related to the early development of head surgery.

Results: The article summarizes a variety of illustrations that present the history of head surgery through images created by painters of the past, both recognized geniuses and those whose names have not been known to a non-specialist audience.

[Peculiarities of disorders of brain bioelectrical activity spatial-time organization in patients with different consciousness depression after severe head injury].

Specific changes of bioelectrical brain activity was found in 27 patients with different level of posttraumatic consciousness depression by the methods of crosscorrelation, coherence and factor analysis of EEG. The changes of activity of morphofunctional systems of intracerebral integrations were revealed partially by decreasing of unspecific activity from brainstem structures reflected with increasing of slow wave activity and decreasing of EEG coherence in alpha- and beta-range. Depression of system organization of interconnections of bioelectrical brain activity in frontal and occipital regions of both hemispheres was also detected, and testified about decreasing of intercortical and thalamocortical brain system action under brain dislocation.