Analysis of the impulse activity of the cerebral neurons in rabbits with artificial thirst

Neuronal impulse activity of various brain structures was studied in rabbits in conditions of artificial thirst elicited by intrabrain injection of 0.3-0.5 M NaCl solution (from 5 to 8 mcl). Specific organization was revealed of the impulse flow at drinking motivational excitation, i.e., domination on interval histograms of certain intervals (20-40 and 100-200 ms). Comparative analysis of activity patterns of both different and the same neurones in conditions of natural and artificial thirst showed a resemblance of dominating intervals values that testifies to specificity of the observed neural activity characteristics, reflecting drinking motivational excitation. Thus, an interval code is found corresponding to drinking motivational state. P. K. Anokhin's notions about anticipating reflection of reality find their expression in anticipating reactions of brain neuronal activity.