The article cites the work of justifying the legality of the search dependencies between morphometric indicators of MT and indicators of functional asymmetry of the brain. In the experimental studies aimed at the investigation of these dependencies, with mixed results. Studies on the eff ect of the male hormone on the size of MT are analyzed in the fi rst section. In the second section of the article discusses the work of trying to fi nd regularities between the size of MT and the degree of functional asymmetries. Th e results of these studies are interesting in the discussion about the function (braking and/or exciting) MT and its infl uence on the formation of anatomical and functional asymmetries. Of particular interest are the works of the third section, as they assumptions of dependence of the size of MT from the coincidence of speech and manual asymmetries.

Today the nature of neuropsychological syndromes in various corpus callosum (CC) pathology remains an open question. We have examined 30 subjects with cc pathology. All subjects performed the procedure of fixed set by D.N. Uznadze. The analysis of the results demonstrated connection between fixed set functioning and condition of left hemisphere and access to it. The most prominent impairment of set forming dynamics was demonstrated by the subjects with CC pathology. However these subjects have also demonstrated posterior right hemisphere deficit in standard neuropsychological examination. Thus, we can conclude the dissociative nature of the interhemispheric impairment syndrome.