[Reversibility of the effect of the change in time of the magnetic field on molluscan neurons].

Influence of a single impulse of magnetic field (MF) of trapezoidal shape with 10 Oe amplitude on neuron electrical activity (EA) of Lymnaea stagnalis was studied. It has been found that both leading and trailing edges of MF impulse separately were able to change EA of the cells. Nevertheless the impulses with a short time between the edges were found to be of small efficiency.

[Effect of a series of small amplitude magnetic field pulses on the electrical activity of mollusk neurons].

Possibility of summing up in time the effects of small values of impulses of 1 Oe magnitude magnetic field (MF) on the electrical activity (EA) of Lymnaea stagnalis neurons was studied. The single impulse of MF did not cause changes in neurons EA. EA changes took place under the action of 5-8 impulses of MF.

[Effect of a single magnetic field pulse on the electric activity of mollusk neurons].

The influence of a single impulse of magnetic field (MF) of triangular shape of neuron electrical activity (EA) of Limnaea stagnalis registered intracellulary was studied. The dependence of the neuron reaction on the MP speed changing has been found. The effective values of speeds of impulse fronts were within 0,1 to 10,0 mT/c range.

[Changes in the electrical properties of atrial trabecula induced by an electric stimulus].

Electrical activity, excitation threshold and "steady--state" current-voltage, relationship (estimated under voltage clamp conditions) in the membrane of chicken embryo atrial trabecula were investigated by means of double succrose-gap technique. Application of short (10 msec) electrical stimuli with magnitudes up to 6.10(-5) a (1-150 threshold) resulted in increased excitability and appearance of spontaneous activity.