[Functional state of adolescents with high and low stress reactivity under informational load].

The analysis of a complex psycho-physiological set of changes of 13-14 year-old adolescents with high and low stress reactivity under the circumstances of informational loads of different complex levels showed that the test tasks rise their level of CNS activity, the autonomic balance shift to the predominance of the sympathetic part of ANS and system circulatory dynamics stimulation. It is stated that at the beginning the rise of psycho-physiological reactivity under a tense informational load of boys' sexual maturation levels (SML) of a particular typological groups is coming up. It shows a high physiological cost of adaptation and low functional capabilities of adolescents' organisms who are under II and III SML. It is also stated that there are some valuable differences between the adolescents with high and low stress reactivity on the considering SML which are conditioned by the specific of cortical-stem and limbic-reticulated mechanisms of functional state regulation.