[Individual variability of the human brain (putamen)].

By means of microscopical cytoarchitectonical methods the borders of the putamen have been established and its volume has been measured in the brain of some persons of various sex and age (21 individuals, 27 hemispheres). The putamen variants are not connected with changes in the brain weight and age. The difference in the volume of the extreme variants is 3.7 times. The distribution of the variants does not contradict the hypothesis on its normality. The data obtained make to revise the principles on the proportional dependence between the external and internal structures of the brain which lie in the base for using stereotaxic atlases at any size of the human brain. An especially real threat for complications at surgical interventions performed in the human brain occurs when the most seldom variants of the putamen are present, since their parameters are not at all taken into consideration in the existing stereotaxic reference Moscow.