[Genetically determined characteristics of conditioned reflex and locomotor activity of rats of different lines].

Peculiarities of conditioned instrumental food obtaining (getting) "pyrocmu" reflex development and realization of locomotor reactions (exploratory activity, motor activity, stance, gruming) of hypertensive (SHR) and Wistar rats in ordinary conditions and after strong sound signal were studied. It is shown that the dynamics of conditioned reflex development and its reproducing after experiment interruption are essentially different in two groups of animals: reflex conditioned in Wistar rats is of high level and is easily reproducible while in hypertensive animals it is transformed to the hidden (concealed) form of "incomplete" conditioned reflex-smelling at feeding rack in response to sound signal. The higher anxiety level and lower adaptability of hypertensive rats as compared with Wistar rats to the experimental conditions are confirmed by higher exploratory activity, more prolonged gruming in standard experimental conditions and long-duration immobility phase after sound signal.