[Modeling the interactions of pacemakers of sigma rhythm spindles]

An approach to modeling "sleeping" spindles (waxing and waning of characters patterns cycles 12-18 H) of electrical activity of mammalian brain was proposed, which is based on the idea of the pacemaker nature of the sigma rhythm. The spindles are assumed to result from the rhythmic interaction of cortical neurons and medial thalamus cells. A system of oscillatory links operating in the mode of small vacillations is taken as an analog of this interaction. A deepening of slow-wave sleep is considered to result from an increase in the density of interactions and the number of oscillatory links, which is associated with differences in the adaptation of organisms of high and low anxiety to environmental changes.