I B Meliksetian

  • Citations Per Year
Learn More
A new method was developed to demonstrate Ca2+-dependent acid phosphatase activity, that is designed for the study of cytochemical organization of CNS cellular structures. Besides its histochemical significance, this method is of certain morphological interest, as it gives the results, intermediate between those obtained using Nissl's method and silver(More)
The effects of unilateral transection of bulbar pyramids on instrumental conditioned reflexes in rats were shown to be in direct relationship with the time of its execution. In rats with stable conditioned reflexes, pyramidotomy impaired conditioned performance, on the average, for 3.9 days. However, preliminary transection of the pyramid delayed operant(More)
Chronic insufficiency of adrenal hormones is a pathology leading to brain dysfunction. In electrophysiological studies, by extracellular recording of spike activity of single hippocampal neurons (HN) caused by high-frequency stimulation of the entorhinal cortex (EC) in rats with unilateral removal of adrenal (adrenalectomy - AE), we analyzed mechanisms of(More)
Unilateral transection of bulbar pyramid performed prior to ablation of the ipsilateral sensomotor cortex was shown to facilitate recovery of operant conditioning and compensatory processes in rats. There was no such corticofugal plasticity in ablation of the sensomotor cortex alone. The phenomenon may be explained by switching of descending influences on(More)
It has been shown the reinforcement of the corticofugal plasticity in adult rats after unilateral ablation of sensorimotor cortex accompanied by intramuscular injections of low concentrations of BT-melanin. In result the process of compensatory recovery in rats central nervous system is accelerated, confirmable by the rapid recovery of previously elaborated(More)
Existence of two types of uncoordinated spontaneous activities of the cat ureterbladder area was shown: spikes and slow waves. The oscillation frequency of this area is two-fold lesser than the rhythm of renal waves. The activity concordance of these pacemakers occurs under conditions of ureter dissection in the middle. Normally pacemakers of this area seem(More)
The effects if different concentrations of oxytocin (10(-2), 10(-1), 1 and 10 microg/kg) on burst duration and spikes frequency of spontaneous electrical activity in various parts of uterine horns and uterine corpus in non-pregnant rats have been shown. The changes in given parameters for ovarian parts of horns had similar characters unlike cervical parts(More)
Histochemical study of brain hemisphere hemo-microcirculatory bed in rats treated with large doses of molybdenum demonstrated significant 30-55% narrowing of capillary diameter as compared to that in normal animals. This constriction is likely to cause capillary trophic insufficiency syndrome that is important in pathogenetic mechanisms of(More)