[Effect of 1,2,3,4-tetrahydroimidazo[4,5-c]pyridine and 1,2,3,4-tetrahydroisoquinoline derivatives on the behavior and the brain receptor system in rats].

Adducts obtained via the interaction of formaldehyde with histidine (1,2,3,4-tetrahydroimidazo[4, 5-c]pyridine-3-carboxylic acid (I)), tyrosine (7-hydroxy-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid (II)), and dopamine (6,7-dihydroxy-1,2,3,4-tetrahydroisoquinoline (III)) influence the behavior and the state of the brain receptor system of rats upon chronic administration (10-day treatment at a daily dose of 50 mg/kg, i.p.).

[Contrast sensitivity in amblyopia, abiotrophy and optic nerve atrophy in children].

The threshold spatial contrast sensitivity was assessed in children with amblyopia, tapetoretinal abiotrophy, and partial atrophy of the optic nerve of different origin. The measurements were carried out at spatial frequencies of 0.5-22 cycle/grad.

[A new method of assessing contrast sensitivity in patients with eye diseases].

A new method for examining spatial contrast sensitivity (SCS) is described, making use of the display of an IBM-compatible computer, on which sinusoidal patterns are presented: achromatic and chromatic red, green, blue against the black background at a frequency of 0.5 to 22 cycles/degree. In health similarity of curves to the achromatic and chromatic patterns was observed, with the maximal sensitivity at spatial frequencies from 2 to 8 cycles/degree and a reduction at low and high spatial frequencies.

[Disorders of membrane mechanisms in stressor damage to the heart in rats of various strains].

The resistance of the rat's organism to emotional stress is determined by alterations of the heart's electric stability. The condition of lipid oxidation is accompanied by alterations of cholesterol and ionised calcium concentrations. Such alterations were expressed in Fisher rats to a greater extent.

[The action of korazol on the defensive behavior of rats].

The paper shows the dependence of behavioral changes provoked by corazol on individual characteristics of the animals. The rats with high activity in the ATS demonstrated the highest response to the drugs.