نتایج جستجو برای: bioelectric phenomenon
تعداد نتایج: 158864 فیلتر نتایج به سال:
Standard techniques used to visualize the human bioelectric activity are typically restricted to depictions of scalar potentials or activation times. Hence they offer no explicit representation of the geometry of the current. We show in this paper that advanced flow visualization techniques can be successfully applied to this type of data. Applications to cardiovascular research and source reco...
Natural endogenous voltage gradients not only predict and correlate with growth and development but also drive wound healing and regeneration processes. This review summarizes the existing literature for the nature, sources, and transmission of information-bearing bioelectric signals involved in controlling wound healing and regeneration in animals, humans, and plants. It emerges that some bioe...
The conventional functional MRI (fMRI) map offers information indirectly about localized changes in neuronal activity because it reflects changes in blood oxygenation, not actual neuronal activity. To provide a neurophysiological basis of fMRI, researchers have used electrophysiology to show correlations of fMRI and electric signals. However, quantitative interpretation of the degree to which n...
BACKGROUND AND PURPOSE The caudate circuit takes part in cognitive control of motor activity. The purpose of the present work was registration and analysis of basic bioelectrical activity of ventral and dorsal sensory-motor cortex and nucleus caudate, study of the changes in EEG after nucleus caudate electrical stimulation and to identify of threshold level of electrical stimuli responsible for...
The role of electroosmosis was studied directly in Nitella. The cells were mounted in a water-tight barrier between two chambers containing reversible electrodes for the application of potentials, and fitted with calibrated capillaries to measure water movement. No water movement was found when small existing bioelectric potentials were short-circuited through an external connection, nor when e...
Ion transport by the airway epithelium contributes to the regulation of the quantity and composition of respiratory tract fluid, thereby affecting mucociliary clearance. We have investigated the effect of the mucoactive drug S-carboxymethylcysteine-lysine salt (S-CMC-Lys) on the transepithelial bioelectric properties of isolated rabbit trachea. Transepithelial potential difference (Vms), short-...
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