Results 21 to 30 of about 302,258 (333)

Calcium-independent inhibitory G-protein signaling induces persistent presynaptic muting of hippocampal synapses [PDF]

, 2011
Adaptive forms of synaptic plasticity that reduce excitatory synaptic transmission in response to prolonged increases in neuronal activity may prevent runaway positive feedback in neuronal circuits.
Chang, Chun Yun, Crawford, Devon C, Hyrc, Krzysztof L, Mennerick, Steven   +3 more
core   +2 more sources

The role of action potential changes in depolarization-induced failure of excitation contraction coupling in mouse skeletal muscle

eLife, 2022
Excitation-contraction coupling (ECC) is the process by which electrical excitation of muscle is converted into force generation. Depolarization of skeletal muscle resting potential contributes to failure of ECC in diseases such as periodic paralysis ...
Xueyong Wang, Murad Nawaz, Chris DuPont, Jessica H Myers, Steve RA Burke, Roger A Bannister, Brent D Foy, Andrew A Voss, Mark M Rich   +8 more
doaj   +1 more source

Evaluation of the Relationship between T2*CMR and Cardiac Depolarization and Repolarization Parameters in Beta-Thalassemia Patients [PDF]

Journal of Kerman University of Medical Sciences
Background: Cardiac iron overload causes severe cardiac complications and is a leading cause of death in beta-thalassemia major patient. T2*CMR can detect preclinical cardiac iron overload.
yazdan ghandi, Bita Ghahremani, Aziz Eghbali, Parsa Yousefichaijan, Masoud Bahrami   +4 more
doaj   +1 more source

The Beginnings of the Academic Career of Ștefan Procopiu [PDF]

Memoirs of the Scientific Sections of the Romanian Academy, 2022
The two authors of the study approach the first steps of the impressive scientific career of acad. Ștefan Procopiu (1890-1972), and his fundamental discoveries, namely: determination of the molecular magnetic moment, the Procopiu phenomenon (longitudinal
Monica Nănescu, Oana Florescu
doaj  

Disinhibition of hippocampal CA3 neurons induced by suppression of an adenosine A1 receptor-mediated inhibitory tonus: Pre- and postsynaptic components [PDF]

, 1993
Intracellular recordings were performed on hippocampal CA3 neuronsin vitro to investigate the inhibitory tonus generated by endogenously produced adenosine in this brain region.
Alzheimer, Alzheimer, Alzheimer, Alzheimer, Andreasen, Arai, Ault, Ault, B. Sutor, Bauer, Beavo, Beavo, Ben-Ari, Bruns, Bruns, C. Alzheimer, Chamberlin, Daly, Dragunow, Dragunow, Dunwiddie, Dunwiddie, Dunwiddie, Fredholm, G. Ten Bruggencate, Gerber, Greene, Greene, Haas, Hablitz, Hablitz, Jackisch, Johnston, Linden, Linden, Llinás, Lohse, Madison, Malenka, Meghji, Miles, Moraidis, Nicholson, Pockett, Prestwich, Prince, Scholz, Schubert, Schubert, Smellie, Smellie, Smith, Snyder, Snyder, Sutor, Tanaka, Thompson, Thompson, Van Calker, Williams, Zetterström   +60 more
core   +1 more source

Cooperative Glutamatergic and Cholinergic Mechanisms Generate Short-Term Modifications of Synaptic Effectiveness in Prepositus Hypoglossi Neurons [PDF]

, 2005
To maintain horizontal eye position on a visual target after a saccade, extraocular motoneurons need a persistent (tonic) neural activity, called "eye-position signal," generated by prepositus hypoglossi (PH) neurons.
Delgado-Garcia, JM, Navarro Lopez, JDD, Yajeya, J   +2 more
core   +1 more source

Reduced Ca2+ transient amplitudes may signify increased or decreased depolarization depending on the neuromodulatory signaling pathway

Frontiers in Neuroscience, 2022
Neuromodulators regulate neuronal excitability and bias neural circuit outputs. Optical recording of neuronal Ca2+ transients is a powerful approach to study the impact of neuromodulators on neural circuit dynamics.
Arunima Debnath, Paul D. E. Williams, Bruce A. Bamber   +2 more
doaj   +1 more source

Depolarization regions of nonzero volume in bianisotropic homogenized composites [PDF]

, 2006
In conventional approaches to the homogenization of random particulate composites, the component phase particles are often treated mathematically as vanishingly small, point-like entities.
Collin R. E., Frisch U., J. Cui, Lakhtakia A., Lakhtakia A., Lax B., Mackay T. G., Michel B., Michel B., Michel B., Press W. H., Prinkey M. T., Ryzhov Yu. A., T. G. Mackay, van de Hulst H. C., Ward L., Weiglhofer W. S.   +16 more
core   +2 more sources

Electrical and Contractile Properties of the Heart Ventricle in Response to Ambient Temperature Changes in Frog Rana temporaria [PDF]

International Journal of Biomedicine, 2017
The aim of the study was to investigate the dynamics of change in the intraventricular pressure, depolarization and repolarization processes on the ventricular epicardium (VE) in Rana temporaria in response to a rise in ambient temperature. By methods of
Natalya A. Kibler, Vladimir P. Nuzhny, Valentina I. Prosheva   +2 more
doaj   +1 more source

The effect of relative humidity on the polarization Mueller matrix under the oil smoke environment

Frontiers in Physics, 2023
For the variation of the polarized Mueller matrix of oil smoke particles under different relative humidity levels, the polarized single scattering characteristics of oil smoke particles are studied by using the Mie scattering theory, and the multiple ...
Chengbiao Shen, Su Zhang, Qiang Fu, Juntong Zhan, Jin Duan, Yingchao Li   +5 more
doaj   +1 more source