[Sleep as an index of the central nervous system reaction of the dog to the action of stress factors].

Continuous round-the-clock polygraphic monitoring of sleep and wakefulness was done once a week from four dogs which for a month were kept under isolated and confined conditions. Significant differences were found in the dynamics of representation of various sleep stages that depended on the typological characteristics of the higher nervous activity and related patterns of adaptation to stress-effects. The findings show that sleep studies are promising for the selection of flight animals and for objective evaluation of their adaptive capacity.