[Role of motivational excitations in the integrative activity of individual cerebral neurons].

It has been shown that motivational excitation is a factor that changes the functional properties of brain single neurones. On the basis of ascending activating influences of the hypothalamic initiative centres, motivational excitation considerably changes convergent and discriminating properties of the cortical units. It is toward the cortical and subcortical neurones excitated by motivation that excitations evoked by reinforcing stimuli are directed. Under repetitive reinforcing action a certain trace is imprinted in the dynamic architecture of motivational excitation, which is the neuronal basis of the action result acceptor. The apparatus of the action result acceptor, formed after the precedence principle, is precisely the directing factor of the animals' purposeful activity.