[Defensive dominant detected by an unconditioned blinking reflex].

Multiple stimulation of rabbit leg with short DC pulses of both threshold and subthreshold intensities creates in corresponding areas of CNS a focus of excitation with dominant properties: summation, inertia et al. When an unconditioned reflex (blinking) was used as in agent exposing defensive dominant, it was found that summation in the dominant focus may occur without a conjugate inhibition of the subdominant center. During summation the dominant center is not uniform. Depending on the level of excitation in the dominant focus, the subdominant focus may be both in inhibitory state (no blinking in response to the subdominant stimulus) and in a state of enhanced excitation (the reflex to its proper stimulus increases). Multiple pairings of two subthreshold stimulations (of leg and eyelid) result in the establishment of a temporary connection with two-way conductivity.