Physiological problems of biofeedback control of the pulse rate.

Data are presented in this article on the voluntary control of the heart rate in man as a function of individual typological differences in adaptive attributes, in the ecological features of the milieu of habitation and work, as well as in the presence of deviations in the state of health (neuroses, vegetovascular dystonias, etc.). The key significance of training of the rhythmic regulatory processes in the course of biofeedback control is substantiated.

[The biological action of physical factors in the critical periods of embryogenesis].

The critical period in a chicken embryonic development (the 10-13-th days of incubation) is revealed under total electromagnetic radiation. This external factor is a physiologically active irritant which can influence functional state of the brain. The increased absorption of electromagnetic energy takes place in this incubation period.

[The physiological problems of biofeedback control by the heart rate].

The data on voluntary regulation of the heart rate in humans is given in respect to individual-typological differences of adaptive abilities, ecological specifics of ambient environment and labour, health condition (neuroses, vegetative-vascular dystonias etc.). A major role of training of the rhythmic regulatory processes for the biological feedback control, is corroborated.