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Relevant bibliographies by topics / Depolarization wave propagation

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Academic literature on the topic 'Depolarization wave propagation'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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Journal articles on the topic "Depolarization wave propagation"

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Ben-Shimol, Y., N. Blaunstein, and M. Sergeev. "DEPOLARIZATION EFFECTS OF RADIO WAVE PROPAGATION IN VARIOUS LAND BUILT–UP ENVIRONMENTS." Informatsionno-upravliaiushchie sistemy (Information and Control Systems) 74, no. 1 (2015): 68–76. http://dx.doi.org/10.15217/issn1684-8853.2015.1.68.

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Momose-Sato, Yoko, Naohisa Miyakawa, Hiraku Mochida, Shinichi Sasaki, and Katsushige Sato. "Optical Analysis of Depolarization Waves in the Embryonic Brain: A Dual Network of Gap Junctions and Chemical Synapses." Journal of Neurophysiology 89, no. 1 (2003): 600–614. http://dx.doi.org/10.1152/jn.00337.2002.

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Correlated neuronal activity plays a fundamental role in the development of the CNS. Using a multiple-site optical recording technique with a voltage-sensitive dye, we previously described a novel type of depolarization wave that was evoked by cranial or spinal nerve stimulation and spread widely over the whole brain region in the chick embryo. We have now investigated developmental expression and neuronal network mechanisms of this depolarization wave by applying direct stimulation to the brain stem or upper cervical cord of E5–E11 embryos, which elicited wave activity similar to that evoked

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Santos, Edgar, Renán Sánchez-Porras, Oliver W. Sakowitz, Jens P. Dreier, and Markus A. Dahlem. "Heterogeneous propagation of spreading depolarizations in the lissencephalic and gyrencephalic brain." Journal of Cerebral Blood Flow & Metabolism 37, no. 7 (2017): 2639–43. http://dx.doi.org/10.1177/0271678x16689801.

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In the recently published article, “Heterogeneous incidence and propagation of spreading depolarizations,” it is shown, in vivo and in vitro, how KCl-induced spreading depolarizations in mouse and rat brains can be highly variable, and that they are not limited, as once thought, to a concentric, isotropic, or homogenous depolarization wave in space or in time. The reported results serve as a link between the different species, and this paper contributes to changing the way in which SD expansion is viewed in the lissencephalic brain. Here, we discuss their results with our previous observations

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Bayguinov, Orline, Sean M. Ward, James L. Kenyon, and Kenton M. Sanders. "Voltage-gated Ca2+ currents are necessary for slow-wave propagation in the canine gastric antrum." American Journal of Physiology-Cell Physiology 293, no. 5 (2007): C1645—C1659. http://dx.doi.org/10.1152/ajpcell.00165.2007.

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Electrical slow waves determine the timing and force of peristaltic contractions in the stomach. Slow waves originate from a dominant pacemaker in the orad corpus and propagate actively around and down the stomach to the pylorus. The mechanism of slow-wave propagation is controversial. We tested whether Ca2+ entry via a voltage-dependent, dihydropyridine-resistant Ca2+ conductance is necessary for active propagation in canine gastric antral muscles. Muscle strips cut parallel to the circular muscle were studied with intracellular electrophysiological techniques using a partitioned-chamber appa

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Smith, T. K., J. B. Reed, and K. M. Sanders. "Effects of membrane potential on electrical slow waves of canine proximal colon." American Journal of Physiology-Cell Physiology 255, no. 6 (1988): C828—C834. http://dx.doi.org/10.1152/ajpcell.1988.255.6.c828.

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The effects of membrane potential on the waveforms and propagation of slow waves were tested using circular muscles of the canine colon. Studies were conducted with intracellular recording techniques on cross-sectional strips of canine proximal colon. Circular muscle cells near the submucosa generated slow waves that decayed in amplitude as they spread through the circular layer. The membrane potentials of cells were less negative as a function of distance from the submucosal border. Cells near the submucosa were depolarized with elevated external K+ and electrical pulses using the partitioned

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Tryba, Andrew K., Edward M. Merricks, Somin Lee, et al. "Role of paroxysmal depolarization in focal seizure activity." Journal of Neurophysiology 122, no. 5 (2019): 1861–73. http://dx.doi.org/10.1152/jn.00392.2019.

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We analyze the role of inhibition in sustaining focal epileptic seizure activity. We review ongoing seizure activity at the mesoscopic scale that can be observed with microelectrode arrays as well as at the macroscale of standard clinical EEG. We provide clinical, experimental, and modeling data to support the hypothesis that paroxysmal depolarization (PD) is a critical component of the ictal machinery. We present dual-patch recordings in cortical cultures showing reduced synaptic transmission associated with presynaptic occurrence of PD, and we find that the PD threshold is cell size related.

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Seppey, Dominique, Roger Sauser, Michèle Koenigsberger, Jean-Louis Bény, and Jean-Jacques Meister. "Intercellular calcium waves are associated with the propagation of vasomotion along arterial strips." American Journal of Physiology-Heart and Circulatory Physiology 298, no. 2 (2010): H488—H496. http://dx.doi.org/10.1152/ajpheart.00281.2009.

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Vasomotion consists of cyclic arterial diameter variations induced by synchronous contractions and relaxations of smooth muscle cells. However, the arteries do not contract simultaneously on macroscopic distances, and a propagation of the contraction can be observed. In the present study, our aim was to investigate this propagation. We stimulated endothelium-denuded rat mesenteric arterial strips with phenylephrine (PE) to obtain vasomotion and observed that the contraction waves are linked to intercellular calcium waves. A velocity of ∼100 μm/s was measured for the two kinds of waves. To inve

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Blackwell, K. T. "Calcium Waves and Closure of Potassium Channels in Response to GABA Stimulation in Hermissenda Type B Photoreceptors." Journal of Neurophysiology 87, no. 2 (2002): 776–92. http://dx.doi.org/10.1152/jn.00867.2000.

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Classical conditioning of Hermissenda crassicornisrequires the paired presentation of a conditioned stimulus (light) and an unconditioned stimulus (turbulence). Light stimulation of photoreceptors leads to production of diacylglycerol, an activator of protein kinase C, and inositol triphosphate (IP3), which releases calcium from intracellular stores. Turbulence causes hair cells to release GABA onto the terminal branches of the type B photoreceptor. One prior study has shown that GABA stimulation produces a wave of calcium that propagates from the terminal branches to the soma and raises the p

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Senseman, David M., and Kay A. Robbins. "High-Speed VSD Imaging of Visually Evoked Cortical Waves: Decomposition Into Intra- and Intercortical Wave Motions." Journal of Neurophysiology 87, no. 3 (2002): 1499–514. http://dx.doi.org/10.1152/jn.00475.2001.

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In the pond turtle, Pseudemys scripta elegans, visually evoked cortical waves propagate at different velocities within the primary visual area compared with waves that pass into the secondary visual area. In an effort to separate intra- and intercortical wave motions, movies of visually evoked cortical waves recorded by high-speed voltage-sensitive dye (VSD) imaging were subjected to Karhunen-Loéve (KL) decomposition. This procedure decomposes the VSD movies into a series of basis images that capture different spatial patterns of coherent activity. Most of the energy of the compound wave motio

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Aiba, Isamu, Andrew P. Carlson, Christian T. Sheline, and C. William Shuttleworth. "Synaptic release and extracellular actions of Zn2+ limit propagation of spreading depression and related events in vitro and in vivo." Journal of Neurophysiology 107, no. 3 (2012): 1032–41. http://dx.doi.org/10.1152/jn.00453.2011.

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Cortical spreading depression (CSD) is a consequence of a slowly propagating wave of neuronal and glial depolarization (spreading depolarization; SD). Massive release of glutamate contributes to SD propagation, and it was recently shown that Zn2+ is also released from synaptic vesicles during SD. The present study examined consequences of extracellular Zn2+ accumulation on the propagation of SD. SD mechanisms were studied first in murine brain slices, using focal KCl applications as stimuli and making electrical and optical recordings in hippocampal area CA1. Elevating extracellular Zn2+ conce

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Dissertations / Theses on the topic "Depolarization wave propagation"

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Kim, Arnold D. "Optical pulse propagation, diffusion and depolarization in discrete random media /." Thesis, Connect to this title online; UW restricted, 2000. http://hdl.handle.net/1773/6770.

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Ředina, Richard. "Model fibrilace síní." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442495.

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The aim of this master thesis is to create a 3D electroanatomical model of a heart atria, which would be able to perform atrial fibrillation. To control the model, the differential equations of the FitzHugh-Nagumo model were chosen. These equations describe the change of voltage on the cell membrane. The equations have established parameters. The modification of them leads to changes in the behavior of the model. The simulations were performed in the COMSOL Multiphysics environment. In the first step, the simulations were performed on 2D models. Simulations of healthy heart, atrial flutter and

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Martinez, Alexandre Souto. "Statistique de polarisation et effet Faraday en diffusion multiple de la lumière." Grenoble 1, 1993. http://www.theses.fr/1993GRE10082.

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Statistique de polarisation et effet faraday en diffusion multiple de la lumiere. L'analyse traditionnelle de la propagation de la lumiere en milieu aleatoire suppose que les ondes sont des champs scalaires et que les diffuseurs sont ponctuels. Nous avons voulu etudier des situations plus realistes. La nature vectorielle du champ electromagnetique et l'anisotropie de diffusion sont explicitement prises en compte par la theorie de mie. Pour realiser cet objectif, nous avons ecrit et mis au point un code de simulation numerique utilisant l'algorithme de monte carlo. Nous nous sommes interesses t

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Book chapters on the topic "Depolarization wave propagation"

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Sanders, Kenton M., and Tamas Ördög. "Properties of Electrical Rhythmicity in the Stomach." In Handbook of Electrogastrography. Oxford University Press, 2003. http://dx.doi.org/10.1093/oso/9780195147889.003.0006.

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Gastric peristaltic contractions are the basis for emptying of solids from the stomach. These events begin in the mid to high corpus region, develop into a ring around the stomach, and spread down the length of the stomach to the pylorus. The pressure wave resulting from gastric peristalsis pushes the contents of the stomach toward the pyloric sphincter, but a nearly simultaneous contraction of the ring of muscle in the pyloric canal and the terminal antrum ultimately forces much of the food in the retrograde direction, toward the body of the stomach. Sheer forces that develop as a result of t

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Dunn, Philip M., Paul R. Coote, and John N. Wood. "Correlative electrophysiological and biochemical studies in neuronal cell lines." In Neuronal Cell Lines. Oxford University PressOxford, 1992. http://dx.doi.org/10.1093/oso/9780199633463.003.0005.

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Abstract Neuronal excitation is usually evoked by a chemical interaction with a specific membrane-associated receptor that results in an alteration in ion fluxes, a change in the transmembrane potential and a self-propagating wave of depolarization mediated by the activation of voltage-gated ion channels (1). The initial depolarizing event may occur through the direct action of a ligand on a receptor that has intrinsic channel activity, or indirectly through the medium of intracellular second messengers.

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Conference papers on the topic "Depolarization wave propagation"

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Regonesi, E., C. Capsoni, and C. Riva. "Radio wave depolarization simulator based on the SC EXCELL model." In 2016 10th European Conference on Antennas and Propagation (EuCAP). IEEE, 2016. http://dx.doi.org/10.1109/eucap.2016.7481245.

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Lostanlen, Y., and T. Tenoux. "Electromagnetic wave depolarization behaviour at different frequencies for various dielectric materials." In 2nd European Conference on Antennas and Propagation (EuCAP 2007). Institution of Engineering and Technology, 2007. http://dx.doi.org/10.1049/ic.2007.1350.

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Ren, Minghao, Xi Liao, Yang Wang, and Jie Zhang. "Depolarization Characteristics of Rough Materials at mm-Wave Frequencies." In 2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI). IEEE, 2021. http://dx.doi.org/10.1109/aps/ursi47566.2021.9703944.

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Ben-Shimol, Y., N. Blaunstein, and Ch Christodoulou. "Depolarization effects of radio wave propagation in various land built-up environments." In 2014 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2014. http://dx.doi.org/10.1109/aps.2014.6904806.

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Anđušić, Ljiljana, Zoran Milankov, Dušan Marić, et al. "Bioinformatics stimulation of oxytocin secretion and its relationship with calcium, potassium and sodium status and milk production." In Zbornik radova 26. medunarodni kongres Mediteranske federacije za zdravlje i produkciju preživara - FeMeSPRum. Poljoprivredni fakultet Novi Sad, 2024. http://dx.doi.org/10.5937/femesprumns24002a.

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Bioinformatics is a science that deals with bio-informational processes and phenomena in living cells during the informational action of light - electromagnetic waves, ionizing radiation, bacteria and viruses, biologically active and chemical substances. Electromagnetic field (EMF) is a flow of energy in the form of an electric and magnetic field that together make up an EM wave. These two components of the EM wave oscillate in phase normal to each other and perpendicular to the direction of energy propagation. In biological systems, electrical phenomena are represented by electrical and ionic

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Liu, Changqing, Jinsheng Yang, and Weidong Lv. "Depolarization effect of different propagation mechanisms around buildings." In 2012 5th Global Symposium on Millimeter Waves (GSMM 2012). IEEE, 2012. http://dx.doi.org/10.1109/gsmm.2012.6314025.

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Matera, F., A. Mecozzi, and M. Settembre. "Light Depolarization Induced by Kerr Nonlinearity in Long Fiber Links." In Nonlinear Guided Waves and Their Applications. Optica Publishing Group, 1995. http://dx.doi.org/10.1364/nlgw.1995.nsad2.

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In long-haul links, the simultaneous presence of Group Velocity Dispersion (GVD), Polarization Mode Dispersion (PMD) [1], Kerr effect and Amplifier Spontaneous Emission (ASE) noise of the in-line optical amplifiers can induce severe light distortion. In particular, the light depolarization can be affected. This is an important issue for systems based upon Polarization Modulation (PM) [2]. The evolution of polarization in long-haul soliton-based systems has been already investigated [2]. A single soliton changes its polarization state during propagation, but it always preserves a definite state

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Jasmin, Serge, and Nakita Vodjdani. "Microwave Waveguide Photodiodes with Distributed Absorption for High Power Applications." In The European Conference on Lasers and Electro-Optics. Optica Publishing Group, 1996. http://dx.doi.org/10.1364/cleo_europe.1996.ctho5.

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The wide developement of analog radio frequency (RF) optical fiber links for optically fed wireless communication systems and phased array antennas is partly conditioned by the availability of high speed, high efficiency photodetectors which can also deliver high RF power. Lumped or travelling-wave waveguide PIN photodetectors (WGPDs) [1,2] can achieve both high quantum efficiency and high bandwidth without any limitations in bandwidth efficiency product as in conventional PD. However in this WGPDs, carriers are generated in the first ten microns. As a consequence, under high illumination, the

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Nikolaou, Symeon, Constantinos Eracleous, Christos G. Panayiotou, and Marios Milis. "Foliage obstacle detection exploiting scattering and depolarization of 2.4 GHz waves used for communication links." In 2012 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting. IEEE, 2012. http://dx.doi.org/10.1109/aps.2012.6349188.

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Nanbu, Yukihisa, and Mitsuo Tateiba. "The Second Order Moment Equation of Crossly Polarized EM-Waves Due to Depolarization in Propagation Through Continuous Isotropic Random Medium." In 2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama). IEEE, 2018. http://dx.doi.org/10.23919/piers.2018.8597624.

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