PECULIARITIES OF CORRELATED ACTIVITY OF F UNCTIONALLY IDENTIFIED HYPOTHALAMIC NEURONS IN DIFFERENT MOTIVATIONAL EMOTIONAL STATES

Simultaneous impulse activity of pairs of neourons in hypothalamus was analysed in different natural functional states of rats (hunger, sati ation after food deprivation, ory of a victim) and those induced by el ectrical stimulation of the emotionally positive (lateral hypothalamus , lateral preoptic area) and negative (dorso-medial tegmentum) reinfor cing hypothalamic structures. Two classes of neurons were separated ac cording to the pattern of their activity determined by the motivationa l state or reinforcement. Characteristic features were revealed in the patterns of conjugate activity of the functionally identified neurons . They were determined by the dominance of motivational or emotional c omponent in the behaviour of an animal and manifested in a specificity of temporal delays in umpulsation of one of the neurons in respect to the other one, in magnitude and number of positive and negative corre lations. The results suggest the different ways of realization of the motivational and reinforcing hypothalamic influences mediated by the n eurons of the motivational and reinforcing systems, on the cortical pr ocesses at different stages of learning which also differ in the balan ce between the motivational and emotional components of the animal beh aviour.