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V F Piatin

Publications and source records attributed to V F Piatin.

14 recordsLinked to original sources
PubMed2002

[Spectral characteristics of electrical activity of the respiratory center in brain processes in fetus and newborn rats in vitro].

Power spectral analysis of inspiratory discharges of C3-C5 ventral roots in brainstem-spinal cord preparation from foetal (18 and 20 gestation days) and newborn (0-1 and 2-3 postnatal days) rats was performed. The respiratory centre perinatal development manifests itself by decreasing of respiratory rhythm variability and increasing of inspiratory burst duration. In foetal inspiratory bursts, low-frequency oscillations (1-10 Hz) dominate. In early postnatal stage, the relative power of low-frequency oscillations begin to decrease, and medium frequency oscillations (10-50 Hz) start to dominate over the inspiratory discharge. The data obtained suggests, that perinatal maturation of respiratory centre is characterised by stabilisation of the respiratory rhythm generation and developmental alteration of inspiratory activity's spectral and temporary parameters.

Animals↗
PubMed1988

[A floating hydraulic micromanipulator for microelectrode research on brain neurons].

The article describes a simple floating hydraulic micromanipulator of original construction which works in positive-positive pressure and provides maximum stability of the microelectrode tip concerning the neuron in the moving brain. This work is achieved by fixing of the micromanipulator on the hinged suspension bracket and by setting of it on the surface of the object with the help of bearing site. Breathing and vascular brain moving don't influence the neuron activity lead.

Animals↗
PubMed1984

[Effect of microiontophoretic exposure to H+ and HCO3(-) on the bioelectric activity and redox status of the neurons in bulbar chemosensitive areas].

Microiontophoretic application of H+ and H+ + HCO-3 to optically monitored multipolar neurons in the caudal and intermediate bulbar chemosensitive areas increased their firing rate and induced discharges in previously "silent" neurons. A reverse effect occurred in some cases. An interrelationship was revealed between changes of the neurons redox-state and the parameters of their spike activity.

Action Potentials↗
PubMed1976

[Reactions of respiratory center neurons to local cooling of the ventral surface of the medulla oblongata].

In anesthetized cats, in conditions of vagal and sinus deafferentation, the effect of bilateral cooling of portions of the medulla oblongata ventral surface on electric activity of the respiratory volley neurons, was studied. The main types of the responses were as follows: cessation or reduction of firing, transformation of the volley discharges into continuous those or continuous with respiratory modulation. These responses were followed by cessation or sharp depression of respiration. Data on localization of fields whose cooling entails maximal inhibitory responses of the respiratory neurons, are presented.

Animals↗